920 lines
27 KiB
Groff
920 lines
27 KiB
Groff
.\" $NetBSD: ifconfig.8,v 1.122 2021/03/09 14:39:43 christos Exp $
|
|
.\"
|
|
.\" Copyright (c) 1983, 1991, 1993
|
|
.\" The Regents of the University of California. All rights reserved.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\" 3. Neither the name of the University nor the names of its contributors
|
|
.\" may be used to endorse or promote products derived from this software
|
|
.\" without specific prior written permission.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
.\" SUCH DAMAGE.
|
|
.\"
|
|
.\" @(#)ifconfig.8 8.4 (Berkeley) 6/1/94
|
|
.\"
|
|
.Dd March 9, 2021
|
|
.Dt IFCONFIG 8
|
|
.Os
|
|
.Sh NAME
|
|
.Nm ifconfig
|
|
.Nd configure network interface parameters
|
|
.Sh SYNOPSIS
|
|
.Nm
|
|
.Op Fl N
|
|
.Ar interface address_family
|
|
.Oo
|
|
.Ar address
|
|
.Op Ar dest_address
|
|
.Oc
|
|
.Op Ar parameters
|
|
.Nm
|
|
.Op Fl hLmNvz
|
|
.Ar interface
|
|
.Op Ar protocol_family
|
|
.Nm
|
|
.Fl a
|
|
.Op Fl bdhLNmsuvz
|
|
.Op Ar protocol_family
|
|
.Nm
|
|
.Fl l
|
|
.Op Fl bdsu
|
|
.Nm
|
|
.Fl s
|
|
.Ar interface
|
|
.Nm
|
|
.Fl w
|
|
.Ar secs
|
|
.Op Fl W Ar secs
|
|
.Nm
|
|
.Fl C
|
|
.Sh DESCRIPTION
|
|
.Nm
|
|
is used to assign an address
|
|
to a network interface and/or configure
|
|
network interface parameters.
|
|
.Nm
|
|
must be used at boot time to define the network address
|
|
of each interface present on a machine; it may also be used at
|
|
a later time to redefine an interface's address
|
|
or other operating parameters.
|
|
.Pp
|
|
Available operands for
|
|
.Nm :
|
|
.Bl -tag -width Ds
|
|
.It Ar address
|
|
For the
|
|
.Tn DARPA-Internet
|
|
family,
|
|
the address is either a host name present in the host name data
|
|
base,
|
|
.Xr hosts 5 ,
|
|
or a
|
|
.Tn DARPA
|
|
Internet address expressed in the Internet standard
|
|
.Dq dot notation .
|
|
.It Ar address_family
|
|
Specifies the
|
|
.Ar address_family
|
|
which affects interpretation of the remaining parameters.
|
|
Since an interface can receive transmissions in differing protocols
|
|
with different naming schemes, specifying the address family is recommended.
|
|
The address or protocol families currently
|
|
supported are
|
|
.Dq inet ,
|
|
.Dq inet6 ,
|
|
.Dq atalk ,
|
|
and
|
|
.Dq link .
|
|
.It Ar interface
|
|
The
|
|
.Ar interface
|
|
parameter is a string of the form
|
|
.Dq name unit ,
|
|
for example,
|
|
.Dq en0
|
|
.El
|
|
.Pp
|
|
The following parameters may be set with
|
|
.Nm :
|
|
.Bl -tag -width dest_addressxx
|
|
.It Cm active
|
|
This keyword applies when
|
|
.Nm
|
|
adds or modifies any link-layer address.
|
|
It indicates that
|
|
.Nm
|
|
should
|
|
.Dq activate
|
|
the address.
|
|
Activation makes an address the default source for transmissions
|
|
on the interface.
|
|
You may not delete the active address from an interface.
|
|
You must activate some other address, first.
|
|
.It Cm advbase Ar n
|
|
If the driver is a
|
|
.Xr carp 4
|
|
pseudo-device, set the base advertisement interval to
|
|
.Ar n
|
|
seconds.
|
|
This ia an 8-bit number; the default value is 1 second.
|
|
.It Cm advskew Ar n
|
|
If the driver is a
|
|
.Xr carp 4
|
|
pseudo-device, skew the advertisement interval by
|
|
.Ar n .
|
|
This is an 8-bit number; the default value is 0.
|
|
.Pp
|
|
Taken together the
|
|
.Cm advbase
|
|
indicate how frequently, in seconds, the host will advertise the fact that it
|
|
considers itself the master of the virtual host.
|
|
The formula is
|
|
.Cm advbase
|
|
+
|
|
.Pf ( Cm advskew
|
|
/ 256).
|
|
If the master does not advertise within three times this interval, this host
|
|
will begin advertising as master.
|
|
.It Cm alias
|
|
Establish an additional network address for this interface.
|
|
This is sometimes useful when changing network numbers, and
|
|
one wishes to accept packets addressed to the old interface.
|
|
.It Fl alias
|
|
Remove the specified network address alias.
|
|
.It Cm arp
|
|
Enable the use of the Address Resolution Protocol in mapping
|
|
between network level addresses and link level addresses
|
|
.Pq default .
|
|
This is currently implemented for mapping between
|
|
.Tn DARPA
|
|
Internet
|
|
addresses and Ethernet addresses.
|
|
.It Fl arp
|
|
Disable the use of the Address Resolution Protocol.
|
|
.It Cm anycast
|
|
.Pq inet6 only
|
|
Set the IPv6 anycast address bit.
|
|
.It Fl anycast
|
|
.Pq inet6 only
|
|
Clear the IPv6 anycast address bit.
|
|
.It Cm broadcast Ar mask
|
|
.Pq Inet only
|
|
Specify the address to use to represent broadcasts to the
|
|
network.
|
|
The default broadcast address is the address with a host part of all 1's.
|
|
.It Cm carpdev Ar iface
|
|
If the driver is a
|
|
.Xr carp 4
|
|
pseudo-device, attach it to
|
|
.Ar iface .
|
|
If not specified, the kernel will attempt to select an interface with
|
|
a subnet matching that of the carp interface.
|
|
.It Cm description Ar description , Cm descr Ar description
|
|
Set a description of the interface. (0-63 characters)
|
|
.It Cm -description , Cm -descr
|
|
Clear the description of the interface.
|
|
.It Cm debug
|
|
Enable driver dependent debugging code; usually, this turns on
|
|
extra console error logging.
|
|
.It Fl debug
|
|
Disable driver dependent debugging code.
|
|
.It Cm delete
|
|
Remove the network address specified.
|
|
This would be used if you incorrectly specified an alias, or it
|
|
was no longer needed.
|
|
If you have incorrectly set an NS address having the side effect
|
|
of specifying the host portion, removing all NS addresses will
|
|
allow you to respecify the host portion.
|
|
.Cm delete
|
|
does not work for IPv6 addresses.
|
|
Use
|
|
.Fl alias
|
|
with explicit IPv6 address instead.
|
|
.It Ar dest_address
|
|
Specify the address of the correspondent on the other end
|
|
of a point to point link.
|
|
.It Cm down
|
|
Mark an interface ``down''.
|
|
When an interface is
|
|
marked ``down'', the system will not attempt to
|
|
transmit messages through that interface.
|
|
If possible, the interface will be reset to disable reception as well.
|
|
This action does not automatically disable routes using the interface.
|
|
.It Cm media Ar type
|
|
Set the media type of the interface to
|
|
.Ar type .
|
|
Some interfaces support the mutually exclusive use of one of several
|
|
different physical media connectors.
|
|
For example, a 10Mb/s Ethernet
|
|
interface might support the use of either
|
|
.Tn AUI
|
|
or twisted pair connectors.
|
|
Setting the media type to
|
|
.Dq 10base5
|
|
or
|
|
.Dq AUI
|
|
would change the currently active connector to the AUI port.
|
|
Setting it to
|
|
.Dq 10baseT
|
|
or
|
|
.Dq UTP
|
|
would activate twisted pair.
|
|
Refer to the interfaces' driver
|
|
specific man page for a complete list of the available types
|
|
and the
|
|
.Xr ifmedia 4
|
|
manual page for a list of media types.
|
|
See the
|
|
.Fl m
|
|
flag below.
|
|
.It Cm mediaopt Ar opts
|
|
Set the specified media options on the interface.
|
|
.Ar opts
|
|
is a comma delimited list of options to apply to the interface.
|
|
Refer to the interfaces' driver specific man page for a complete
|
|
list of available options.
|
|
Also see the
|
|
.Xr ifmedia 4
|
|
manual page for a list of media options.
|
|
.It Fl mediaopt Ar opts
|
|
Disable the specified media options on the interface.
|
|
.It Cm mode Ar mode
|
|
If the driver supports the media selection system, set the specified
|
|
operating mode on the interface to
|
|
.Ar mode .
|
|
For IEEE 802.11 wireless interfaces that support multiple operating modes
|
|
this directive is used to select between 802.11a
|
|
.Pq Dq 11a ,
|
|
802.11b
|
|
.Pq Dq 11b ,
|
|
and 802.11g
|
|
.Pq Dq 11g
|
|
operating modes.
|
|
.It Cm instance Ar minst
|
|
Set the media instance to
|
|
.Ar minst .
|
|
This is useful for devices which have multiple physical layer interfaces
|
|
.Pq PHYs .
|
|
Setting the instance on such devices may not be strictly required
|
|
by the network interface driver as the driver may take care of this
|
|
automatically; see the driver's manual page for more information.
|
|
.It Cm metric Ar n
|
|
Set the routing metric of the interface to
|
|
.Ar n ,
|
|
default 0.
|
|
The routing metric is used by the routing protocol
|
|
.Pq Xr routed 8 .
|
|
Higher metrics have the effect of making a route
|
|
less favorable; metrics are counted as addition hops
|
|
to the destination network or host.
|
|
.It Cm mtu Ar n
|
|
Set the maximum transmission unit of the interface to
|
|
.Ar n .
|
|
Most interfaces do not support this option.
|
|
.It Cm netmask Ar mask
|
|
.Pq inet and inet6
|
|
Specify how much of the address to reserve for subdividing
|
|
networks into sub-networks.
|
|
The mask includes the network part of the local address
|
|
and the subnet part, which is taken from the host field of the address.
|
|
The mask can be specified as a single hexadecimal number
|
|
with a leading 0x, with a dot-notation Internet address,
|
|
or with a pseudo-network name listed in the network table
|
|
.Xr networks 5 .
|
|
The mask contains 1's for the bit positions in the 32-bit address
|
|
which are to be used for the network and subnet parts,
|
|
and 0's for the host part.
|
|
The mask should contain at least the standard network portion,
|
|
and the subnet field should be contiguous with the network
|
|
portion.
|
|
.Pp
|
|
For INET and INET6 addresses, the netmask can also be given with
|
|
slash-notation after the address
|
|
.Pq e.g 192.168.17.3/24 .
|
|
.\" see
|
|
.\" Xr eon 5 .
|
|
.It Cm state Ar state
|
|
Explicitly force the
|
|
.Xr carp 4
|
|
pseudo-device to enter this state.
|
|
Valid states are
|
|
.Ar init ,
|
|
.Ar backup ,
|
|
and
|
|
.Ar master .
|
|
.It Cm frag Ar threshold
|
|
.Pq IEEE 802.11 devices only
|
|
Configure the fragmentation threshold for IEEE 802.11-based wireless
|
|
network interfaces.
|
|
.It Cm rts Ar threshold
|
|
.Pq IEEE 802.11 devices only
|
|
Configure the RTS/CTS threshold for IEEE 802.11-based wireless
|
|
network interfaces.
|
|
This controls the number of bytes used for the RTS/CTS handshake boundary.
|
|
The
|
|
.Ar threshold
|
|
can be any value between 0 and 2347.
|
|
The default is 2347, which indicates the RTS/CTS mechanism should not be used.
|
|
.It Cm ssid Ar id
|
|
.Pq IEEE 802.11 devices only
|
|
Configure the Service Set Identifier (aka the network name)
|
|
for IEEE 802.11-based wireless network interfaces.
|
|
The
|
|
.Ar id
|
|
can either be any text string up to 32 characters in length,
|
|
or a series of up to 64 hexadecimal digits preceded by
|
|
.Dq 0x .
|
|
Setting
|
|
.Ar id
|
|
to the empty string allows the interface to connect to any available
|
|
access point.
|
|
.It Cm nwid Ar id
|
|
Synonym for
|
|
.Dq ssid .
|
|
.It Cm hidessid
|
|
.Pq IEEE 802.11 devices only
|
|
When operating as an access point, do not broadcast the SSID
|
|
in beacon frames or respond to probe request frames unless
|
|
they are directed to the ap (i.e., they include the ap's SSID).
|
|
By default, the SSID is included in beacon frames and
|
|
undirected probe request frames are answered.
|
|
.It Fl hidessid
|
|
.Pq IEEE 802.11 devices only
|
|
When operating as an access point, broadcast the SSID
|
|
in beacon frames and answer and respond to undirected probe
|
|
request frames (default).
|
|
.It Cm nwkey Ar key
|
|
.Pq IEEE 802.11 devices only
|
|
Enable WEP encryption for IEEE 802.11-based wireless network interfaces
|
|
with the
|
|
.Ar key .
|
|
The
|
|
.Ar key
|
|
can either be a string, a series of hexadecimal digits preceded by
|
|
.Dq 0x ,
|
|
or a set of keys in the form
|
|
.Ar n:k1,k2,k3,k4 ,
|
|
where
|
|
.Ar n
|
|
specifies which of keys will be used for all transmitted packets,
|
|
and four keys,
|
|
.Ar k1
|
|
through
|
|
.Ar k4 ,
|
|
are configured as WEP keys.
|
|
Note that the order must be match within same network if multiple keys
|
|
are used.
|
|
For IEEE 802.11 wireless network, the length of each key is restricted to
|
|
40 bits, i.e., 5-character string or 10 hexadecimal digits,
|
|
while the WaveLAN/IEEE Gold cards accept the 104 bits
|
|
.Pq 13 characters
|
|
key.
|
|
.It Cm nwkey Cm persist
|
|
.Pq IEEE 802.11 devices only
|
|
Enable WEP encryption for IEEE 802.11-based wireless network interfaces
|
|
with the persistent key written in the network card.
|
|
.It Cm nwkey Cm persist : Ns Ar key
|
|
.Pq IEEE 802.11 devices only
|
|
Write the
|
|
.Ar key
|
|
to the persistent memory of the network card, and
|
|
enable WEP encryption for IEEE 802.11-based wireless network interfaces
|
|
with the
|
|
.Ar key .
|
|
.It Fl nwkey
|
|
.Pq IEEE 802.11 devices only
|
|
Disable WEP encryption for IEEE 802.11-based wireless network interfaces.
|
|
.It Cm apbridge
|
|
.Pq IEEE 802.11 devices only
|
|
When operating as an access point, pass packets between
|
|
wireless clients directly (default).
|
|
.It Fl apbridge
|
|
.Pq IEEE 802.11 devices only
|
|
When operating as an access point, pass packets through
|
|
the system so that they can be forwarded using some other mechanism.
|
|
Disabling the internal bridging is useful when traffic
|
|
is to be processed with packet filtering.
|
|
.It Cm pass Ar passphrase
|
|
If the driver is a
|
|
.Xr carp 4
|
|
pseudo-device, set the authentication key to
|
|
.Ar passphrase .
|
|
There is no passphrase by default
|
|
.It Cm powersave
|
|
.Pq IEEE 802.11 devices only
|
|
Enable 802.11 power saving mode.
|
|
.It Fl powersave
|
|
.Pq IEEE 802.11 devices only
|
|
Disable 802.11 power saving mode.
|
|
.It Cm powersavesleep Ar duration
|
|
.Pq IEEE 802.11 devices only
|
|
Set the receiver sleep duration in milliseconds for 802.11 power saving mode.
|
|
.It Cm bssid Ar bssid
|
|
.Pq IEEE 802.11 devices only
|
|
Set the desired BSSID for IEEE 802.11-based wireless network interfaces.
|
|
.It Fl bssid
|
|
.Pq IEEE 802.11 devices only
|
|
Unset the desired BSSID for IEEE 802.11-based wireless network interfaces.
|
|
The interface will automatically select a BSSID in this mode, which is
|
|
the default.
|
|
.It Cm chan Ar chan
|
|
.Pq IEEE 802.11 devices only
|
|
Select the channel
|
|
.Pq radio frequency
|
|
to be used for IEEE 802.11-based wireless network interfaces.
|
|
.It Fl chan
|
|
.Pq IEEE 802.11 devices only
|
|
Unset the desired channel to be used
|
|
for IEEE 802.11-based wireless network interfaces.
|
|
It does not affect the channel to be created for IBSS or hostap mode.
|
|
.It Cm list scan
|
|
.Pq IEEE 802.11 devices only
|
|
Display the access points and/or ad-hoc neighbors
|
|
located in the vicinity.
|
|
The
|
|
.Fl v
|
|
flag may be used to display long SSIDs.
|
|
.Fl v
|
|
also causes received information elements to be displayed symbolically.
|
|
The interface must be up before any scanning operation.
|
|
Only the super-user can use this command.
|
|
.It Cm tunnel Ar src_addr Ns Oo Ar ,src_port Oc Ar dest_addr Ns Oo Ar ,dest_port Oc
|
|
.Pq IP tunnel devices only
|
|
Configure the physical source and destination address for IP tunnel
|
|
interfaces, including
|
|
.Xr gif 4 .
|
|
The arguments
|
|
.Ar src_addr
|
|
and
|
|
.Ar dest_addr
|
|
are interpreted as the outer source/destination for the encapsulating
|
|
IPv4/IPv6 header.
|
|
.Pp
|
|
On a
|
|
.Xr gre 4
|
|
interface in UDP mode, the arguments
|
|
.Ar src_port
|
|
and
|
|
.Ar dest_port
|
|
are interpreted as the outer source/destination port for the encapsulating
|
|
UDP header.
|
|
.It Cm deletetunnel
|
|
Unconfigure the physical source and destination address for IP tunnel
|
|
interfaces previously configured with
|
|
.Cm tunnel .
|
|
.It Cm session Ar local_session Ar remote_session
|
|
.Pq L2TPv3 devices only
|
|
Configure local session id and remote session id for L2TPv3
|
|
interface.
|
|
The length of session id is 4 bytes.
|
|
.It Cm deletesession
|
|
Unconfigure the local session id and remote session id for
|
|
L2TPv3 interface previously configured with
|
|
.Cm session .
|
|
.It Cm cookie Ar local_cookie_length Ar local_cookie Ar remote_cookie_length Ar remote_cookie
|
|
.Pq L2TPv3 devices only
|
|
Configure local cookie and remote cookie for L2TPv3 interface.
|
|
The cookie length must be 4 or 8 bytes.
|
|
Generally, cookies are managed by daemon.
|
|
So, this command would be used for test or debug only.
|
|
.It Cm deletecookie
|
|
Unconfigure the local cookie and remote cookie for L2TPv3
|
|
interface previously configured with
|
|
.Cm cookie .
|
|
.It Cm create
|
|
Create the specified network pseudo-device.
|
|
.It Cm destroy
|
|
Destroy the specified network pseudo-device.
|
|
.It Cm pltime Ar n
|
|
.Pq inet6 only
|
|
Set preferred lifetime for the address.
|
|
.It Cm prefixlen Ar n
|
|
.Pq inet and inet6 only
|
|
Effect is similar to
|
|
.Cm netmask .
|
|
but you can specify by prefix length by digits.
|
|
.It Cm deprecated
|
|
.Pq inet6 only
|
|
Set the IPv6 deprecated address bit.
|
|
.It Fl deprecated
|
|
.Pq inet6 only
|
|
Clear the IPv6 deprecated address bit.
|
|
.It Cm eui64
|
|
.Pq inet6 only
|
|
Fill interface index
|
|
.Pq lowermost 64bit of an IPv6 address
|
|
automatically.
|
|
.It Cm link[0-2]
|
|
Enable special processing of the link level of the interface.
|
|
These three options are interface specific in actual effect, however,
|
|
they are in general used to select special modes of operation.
|
|
An example
|
|
of this is to enable SLIP compression, or to select the connector type
|
|
for some Ethernet cards.
|
|
Refer to the man page for the specific driver
|
|
for more information.
|
|
.It Fl link[0-2]
|
|
Disable special processing at the link level with the specified interface.
|
|
.It Cm linkstr Ar str
|
|
Set a link-level string parameter for the interface.
|
|
This functionality varies from interface to interface.
|
|
Refer to the man page for the specific driver
|
|
for more information.
|
|
.It Fl linkstr
|
|
Remove an interface link-level string parameter.
|
|
.It Cm up
|
|
Mark an interface ``up''.
|
|
This may be used to enable an interface after an ``ifconfig down.''
|
|
It happens automatically when setting the first address on an interface.
|
|
If the interface was reset when previously marked down,
|
|
the hardware will be re-initialized.
|
|
.It Cm vhid Ar n
|
|
If the driver is a
|
|
.Xr carp 4
|
|
pseudo-device, set the virtual host ID to
|
|
.Ar n .
|
|
Acceptable values are 1 to 255.
|
|
.It Cm vlan Ar vid
|
|
If the interface is a
|
|
.Xr vlan 4
|
|
pseudo-interface, set the VLAN identifier to
|
|
.Ar vid .
|
|
These are the first 12 bits (0-4095) from a 16-bit integer used
|
|
to create an 802.1Q VLAN header for packets sent from the
|
|
.Xr vlan 4
|
|
interface.
|
|
Note that
|
|
.Cm vlan
|
|
and
|
|
.Cm vlanif
|
|
must be set at the same time.
|
|
.It Cm vlanif Ar iface
|
|
If the interface is a
|
|
.Xr vlan 4
|
|
pseudo-interface, associate the physical interface
|
|
.Ar iface
|
|
with it.
|
|
Packets transmitted through the
|
|
.Xr vlan 4
|
|
interface will be diverted to the specified physical interface
|
|
.Ar iface
|
|
with 802.1Q VLAN encapsulation.
|
|
Packets with 802.1Q encapsulation received
|
|
by the physical interface with the correct VLAN tag will be diverted to the
|
|
associated
|
|
.Xr vlan 4
|
|
pseudo-interface.
|
|
The VLAN interface is assigned a copy of the physical
|
|
interface's flags and
|
|
.Tn Ethernet
|
|
address.
|
|
If the
|
|
.Xr vlan 4
|
|
interface already has a physical interface associated with it, this command
|
|
will fail.
|
|
To change the association to another physical interface, the
|
|
existing association must be cleared first.
|
|
Note that
|
|
.Cm vlanif
|
|
and
|
|
.Cm vlan
|
|
must be set at the same time.
|
|
.It Cm -vlanif Ar iface
|
|
Dissociate
|
|
.Ar iface
|
|
from the
|
|
.Xr vlan 4
|
|
interface.
|
|
.It Cm agrport Ar iface
|
|
Add
|
|
.Ar iface
|
|
to the
|
|
.Xr agr 4
|
|
interface.
|
|
.It Cm -agrport Ar iface
|
|
Remove
|
|
.Ar iface
|
|
from the
|
|
.Xr agr 4
|
|
interface.
|
|
.It Cm eee
|
|
Enable IEEE 802.3az Energy Efficiency Ethernet function.
|
|
.It Cm -eee
|
|
Disable IEEE 802.3az Energy Efficiency Ethernet function.
|
|
.It Cm vltime Ar n
|
|
.Pq inet6 only
|
|
Set valid lifetime for the address.
|
|
.It Cm ip4csum
|
|
Shorthand of
|
|
.Dq ip4csum-tx ip4csum-rx
|
|
.It Cm -ip4csum
|
|
Shorthand of
|
|
.Dq -ip4csum-tx -ip4csum-rx
|
|
.It Cm tcp4csum
|
|
Shorthand of
|
|
.Dq tcp4csum-tx tcp4csum-rx
|
|
.It Cm -tcp4csum
|
|
Shorthand of
|
|
.Dq -tcp4csum-tx -tcp4csum-rx
|
|
.It Cm udp4csum
|
|
Shorthand of
|
|
.Dq udp4csum-tx udp4csum-rx
|
|
.It Cm -udp4csum
|
|
Shorthand of
|
|
.Dq -udp4csum-tx -udp4csum-rx
|
|
.It Cm tcp6csum
|
|
Shorthand of
|
|
.Dq tcp6csum-tx tcp6csum-rx
|
|
.It Cm -tcp6csum
|
|
Shorthand of
|
|
.Dq -tcp6csum-tx -tcp6csum-rx
|
|
.It Cm udp6csum
|
|
Shorthand of
|
|
.Dq udp6csum-tx udp6csum-rx
|
|
.It Cm -udp6csum
|
|
Shorthand of
|
|
.Dq -udp6csum-tx -udp6csum-rx
|
|
.It Cm ip4csum-tx
|
|
Enable hardware-assisted IPv4 header checksums for the out-bound direction.
|
|
.It Cm -ip4csum-tx
|
|
Disable hardware-assisted IPv4 header checksums for the out-bound direction.
|
|
.It Cm ip4csum-rx
|
|
Enable hardware-assisted IPv4 header checksums for the in-bound direction.
|
|
.It Cm -ip4csum-rx
|
|
Disable hardware-assisted IPv4 header checksums for the in-bound direction.
|
|
.It Cm tcp4csum-tx
|
|
Enable hardware-assisted TCP/IPv4 checksums for the out-bound direction.
|
|
.It Cm -tcp4csum-tx
|
|
Disable hardware-assisted TCP/IPv4 checksums for the out-bound direction.
|
|
.It Cm tcp4csum-rx
|
|
Enable hardware-assisted TCP/IPv4 checksums for the in-bound direction.
|
|
.It Cm -tcp4csum-rx
|
|
Disable hardware-assisted TCP/IPv4 checksums for the in-bound direction.
|
|
.It Cm udp4csum-tx
|
|
Enable hardware-assisted UDP/IPv4 checksums for the out-bound direction.
|
|
.It Cm -udp4csum-tx
|
|
Disable hardware-assisted UDP/IPv4 checksums for the out-bound direction.
|
|
.It Cm udp4csum-rx
|
|
Enable hardware-assisted UDP/IPv4 checksums for the in-bound direction.
|
|
.It Cm -udp4csum-rx
|
|
Disable hardware-assisted UDP/IPv4 checksums for the in-bound direction.
|
|
.It Cm tcp6csum-tx
|
|
Enable hardware-assisted TCP/IPv6 checksums for the out-bound direction.
|
|
.It Cm -tcp6csum-tx
|
|
Disable hardware-assisted TCP/IPv6 checksums for the out-bound direction.
|
|
.It Cm tcp6csum-rx
|
|
Enable hardware-assisted TCP/IPv6 checksums for the in-bound direction.
|
|
.It Cm -tcp6csum-rx
|
|
Disable hardware-assisted TCP/IPv6 checksums for the in-bound direction.
|
|
.It Cm udp6csum-tx
|
|
Enable hardware-assisted UDP/IPv6 checksums for the out-bound direction.
|
|
.It Cm -udp6csum-tx
|
|
Disable hardware-assisted UDP/IPv6 checksums for the out-bound direction.
|
|
.It Cm udp6csum-rx
|
|
Enable hardware-assisted UDP/IPv6 checksums for the in-bound direction.
|
|
.It Cm -udp6csum-rx
|
|
Disable hardware-assisted UDP/IPv6 checksums for the in-bound direction.
|
|
.It Cm tso4
|
|
Enable hardware-assisted TCP/IPv4 segmentation on interfaces that
|
|
support it.
|
|
.It Cm -tso4
|
|
Disable hardware-assisted TCP/IPv4 segmentation on interfaces that
|
|
support it.
|
|
.It Cm tso6
|
|
Enable hardware-assisted TCP/IPv6 segmentation on interfaces that
|
|
support it.
|
|
.It Cm -tso6
|
|
Disable hardware-assisted TCP/IPv6 segmentation on interfaces that
|
|
support it.
|
|
.It Cm vlan-hwfilter
|
|
Enable hardware-assisted VLAN frame filter on interfaces that support it.
|
|
.It Cm -vlan-hwfilter
|
|
Disable hardware-assisted VLAN frame filter on interfaces that support it.
|
|
.It Cm vlan-hwtagging
|
|
Enable hardware-assisted VLAN tag insertion/removal on interfaces that
|
|
support it.
|
|
.It Cm -vlan-hwtagging
|
|
Disable hardware-assisted VLAN tag insertion/removal on interfaces that
|
|
support it.
|
|
.It Cm maxupd Ar n
|
|
If the driver is a
|
|
.Xr pfsync 4
|
|
pseudo-device, indicate the maximum number
|
|
of updates for a single state which can be collapsed into one.
|
|
This is an 8-bit number; the default value is 128.
|
|
.It Cm syncdev Ar iface
|
|
If the driver is a
|
|
.Xr pfsync 4
|
|
pseudo-device, use the specified interface
|
|
to send and receive pfsync state synchronisation messages.
|
|
.It Fl syncdev
|
|
If the driver is a
|
|
.Xr pfsync 4
|
|
pseudo-device, stop sending pfsync state
|
|
synchronisation messages over the network.
|
|
.It Cm syncpeer Ar peer_address
|
|
If the driver is a
|
|
.Xr pfsync 4
|
|
pseudo-device, make the pfsync link point-to-point rather than using
|
|
multicast to broadcast the state synchronisation messages.
|
|
The peer_address is the IP address of the other host taking part in
|
|
the pfsync cluster.
|
|
With this option,
|
|
.Xr pfsync 4
|
|
traffic can be protected using
|
|
.Xr ipsec 4 .
|
|
.It Fl syncpeer
|
|
If the driver is a
|
|
.Xr pfsync 4
|
|
pseudo-device, broadcast the packets using multicast.
|
|
.El
|
|
.Pp
|
|
.Nm
|
|
displays the current configuration for a network interface
|
|
when no optional parameters are supplied.
|
|
If a protocol family is specified,
|
|
.Nm
|
|
will report only the details specific to that protocol
|
|
family.
|
|
.Pp
|
|
If the
|
|
.Fl s
|
|
flag is passed before an interface name,
|
|
.Nm
|
|
will attempt to query the interface for its media status.
|
|
If the
|
|
interface supports reporting media status, and it reports that it does
|
|
not appear to be connected to a network,
|
|
.Nm
|
|
will exit with status of 1
|
|
.Pq false ;
|
|
otherwise, it will exit with a zero
|
|
.Pq true
|
|
exit status.
|
|
For interface drivers that do not support media status reporting.
|
|
then if the link state is not reported to be up,
|
|
.Nm
|
|
will exit with a status of 1
|
|
.Pq false ;
|
|
otherwise, it will exit with a zero
|
|
.Pq true
|
|
exit status.
|
|
.Pp
|
|
If the
|
|
.Fl m
|
|
flag is passed before an interface name,
|
|
.Nm
|
|
will display all of the supported media for the specified interface.
|
|
If the
|
|
.Fl L
|
|
flag is supplied, address lifetime is displayed for IPv6 addresses,
|
|
as time offset string.
|
|
.Pp
|
|
Optionally, the
|
|
.Fl a
|
|
flag may be used instead of an interface name.
|
|
This flag instructs
|
|
.Nm
|
|
to display information about all interfaces in the system.
|
|
This is also the default behaviour when no arguments are given to
|
|
.Nm
|
|
on the command line.
|
|
When
|
|
.Fl a
|
|
is used, the output can be modified by adding more flags:
|
|
.Fl d
|
|
limits this to interfaces that are down,
|
|
.Fl u
|
|
limits this to interfaces that are up,
|
|
.Fl b
|
|
limits this to broadcast interfaces, and
|
|
.Fl s
|
|
omits interfaces which appear not to be connected to a network.
|
|
.Pp
|
|
The
|
|
.Fl l
|
|
flag may be used to list all available interfaces on the system, with
|
|
no other additional information.
|
|
Use of this flag is mutually exclusive
|
|
with all other flags and commands, except for
|
|
.Fl d
|
|
.Pq only list interfaces that are down ,
|
|
.Fl u
|
|
.Pq only list interfaces that are up ,
|
|
.Fl s
|
|
.Pq only list interfaces that may be connected ,
|
|
.Fl b
|
|
.Pq only list broadcast interfaces .
|
|
.Pp
|
|
The
|
|
.Fl C
|
|
flag may be used to list all of the interface cloners available on
|
|
the system, with no additional information.
|
|
Use of this flag is
|
|
mutually exclusive with all other flags and commands.
|
|
.Pp
|
|
The
|
|
.Fl v
|
|
flag prints statistics on packets sent and received on the given
|
|
interface.
|
|
If
|
|
.Fl h
|
|
is used in conjunction with
|
|
.Fl v ,
|
|
the byte statistics will be printed in "human-readable" format.
|
|
The
|
|
.Fl z
|
|
flag is identical to the
|
|
.Fl v
|
|
flag except that it zeros the interface input and output statistics
|
|
after printing them.
|
|
.Pp
|
|
The
|
|
.Fl w
|
|
flag may be used to wait
|
|
.Ar seconds
|
|
seconds for the
|
|
.Cm tentative
|
|
flag to be removed from all addresses.
|
|
0 seconds means to wait indefinitely until all addresses no longer have the
|
|
.Cm tentative
|
|
flag.
|
|
The optional
|
|
.Fl W
|
|
flag may be used to wait
|
|
.Ar seconds
|
|
seconds during the above time for the detached flag to be removed from all
|
|
addresses whose interface is marked ``up'' as well.
|
|
The detached flag is set when the interface does not have a carrier.
|
|
.Pp
|
|
The
|
|
.Fl N
|
|
flag is just the opposite of the
|
|
.Fl n
|
|
flag in
|
|
.Xr netstat 1
|
|
or in
|
|
.Xr route 8 :
|
|
it tells
|
|
.Nm
|
|
to try to resolve numbers to hostnames or to service names.
|
|
The default
|
|
.Nm
|
|
behavior is to print numbers instead of names.
|
|
.Pp
|
|
Only the super-user may modify the configuration of a network interface.
|
|
.Sh EXAMPLES
|
|
Add a link-layer (MAC) address to an Ethernet:
|
|
.Pp
|
|
.Ic ifconfig sip0 link 00:11:22:33:44:55
|
|
.Pp
|
|
Add and activate a link-layer (MAC) address:
|
|
.Pp
|
|
.Ic ifconfig sip0 link 00:11:22:33:44:55 active
|
|
.Sh DIAGNOSTICS
|
|
Messages indicating the specified interface does not exist, the
|
|
requested address is unknown, or the user is not privileged and
|
|
tried to alter an interface's configuration.
|
|
.Sh SEE ALSO
|
|
.Xr netstat 1 ,
|
|
.Xr agr 4 ,
|
|
.Xr carp 4 ,
|
|
.Xr ifmedia 4 ,
|
|
.Xr netintro 4 ,
|
|
.Xr pfsync 4 ,
|
|
.Xr vlan 4 ,
|
|
.Xr ifconfig.if 5 ,
|
|
.\" .Xr eon 5 ,
|
|
.Xr rc 8 ,
|
|
.Xr routed 8
|
|
.Sh BUGS
|
|
Due to hardware limitations some of the capabilities cannot be turned on
|
|
and off individually and need to be specified together.
|
|
For example the
|
|
.Xr ixg 4
|
|
driver can't enable separately tcp and udp, or the transmit and receive
|
|
checksumming capabilities.
|
|
Unfortunately the diagnostic messages in this case are lacking.
|
|
.Sh HISTORY
|
|
The
|
|
.Nm
|
|
command appeared in
|
|
.Bx 4.2 .
|