* Fix an unaligned access error on BeagleBone Black with FreeBSD.
Thanks to Guy Yur for the patch.
* Remove the fast loop trying to up an interface which does not
report carrier.
* Remove vis based encoding - instead validate against option type and
stop at invalid [1]
This removes all shell escaped encoding - dhcpcd will assume that IF
the --script option is a shell, it will quote variables correctly.
The stock dhcpcd-run-hooks does.
* dhcpcd -V now prints how the variables will be decoded.
* Changed some options in dhcpcd-definitions.conf to more sensible defaults.
* Don't daemonise on delegated address dad.
* Don't drop delegated reject route when forking.
* Fix IPv6 handling of link-local addresses on KAME stacks.
* Work on OpenBSD-5.6 without any special interface setup needed.
* Callout to handlecarrier when we don't have real carrier support and
rely on looking at IFF_UP and IFF_RUNNING.
This allows our hooks to know that dhcpcd thinks we have a carrier or not.
[1] DHCP option encodings defined in dhcpcd-definitions.conf
* domain (RFC3397)/dname (string) is strict domain name allowance
(ie, [alnum] with _- (but not at the start or end))
* string is now printable ascii (1-127) until invalid
* ascii is all ascii (1-127) until invalid
* raw is all chars (1-255) until NUL
* binhex is a hex representation of the option including embedded NULs
* ssid is still escpaed octal because it's expected to be human readable
AND can technically be all NUL
* everything else has strict option -> value encoding
* Detect removal of IPv6 routes
* Don't add link-local addresses to POINTOPOINT interfaces
* Don't discard expired DHCPv6 leases when dumping them
* If a DHCPv6 lease has no timers, expire it right away
* Report delegated addresses
* Call dhcpcd-run-hooks correctly when delegated prefixes already exist
* Fix a memory error when ia_* config exists but IPv6 is disabled
* Ensure servername and bootfile are safely exported
* Sanitise the following characters using svis(3) with VIS_CTYLE and
VIS_OCTAL:
| ^ & ; < > ( ) $ ` \ " ' <tab> <newline>
This allows a non buggy unvis(1) to decode it 100% and stays compatible
with how dhcpcd used to handle encoding on most platforms.
For systems that supply svis(3) there is a code reduction, for systems
that do not, a slight code increase. This change mitigates systems
affected by bash CVE-2014-6271 and CVE-2014-7169.
* Many bounds checking fixes from Tobias Stoeckmann
* Improve error when the authentication token cannot be found
* close the IPv4 specific UDP socket when done sending
* Implemented a write queue to the control sockets
* Only send interfaces to control sockets when in a BOUND state
* Add a sample controlgroup directive to dhcpcd.conf to make setup easier
* Add variables if_oneup and if_ipwaited so hook scripts know the overall
state of dhcpcd better
* Pass RC_SVCNAME from enviromment to hooks so that a service hook can
know it's name (may not be dhcpcd)
* Document every variable set for dhcpcd-run-hooks(8)
* Allow SSIDs with non printable characters to be used in ssid selection
in dhcpcd.conf
* Add an unprivileged control socket so that normal users can obtain
dhcpcd running state
* Correct DHCPv6 Prefix Delegation option decoding
* Poll interfaces on BSD for IFF_RUNNING if link state cannot be obtained
* Check for an IA to use in DHCPv6 lease validation
* Warn about exceeding IDGEN_RETRIES when a stable private address cannot
be obtained
* Fix DHCP option overload handling, thanks to Tobias Stoeckmann
* If just given a domain and no search list, make the search list the domain
* Skip arpping directives if we have a profile but not parsing one
* Allow the request of a DHCPv6 address or prefix, a prefix length must be
specified
* Add the ability to dump DHCPv6 leases
* Improve startup with regards to carrier checking and adding a link-local
IPv6 address
* Start the correct interface reference for added devices
* Support
http://datatracker.ietf.org/doc/draft-ietf-dhc-dhcpv6-stateful-issues-06
via the ia_pd_mix option
* Fix link handling where kernel reported flags in LINK_UP may not be
valid when we actually process them
* Fix defining new options in dhcpcd.conf and requesting them
* Fix a potential segfault when reloading configurations
* Print user defined options via -V
* Add support for RFC6603, Prefix Exclude option
* When requesting a IA_PD and another IA type, create a psuedo interface
to handle the IA_PD
* Handle truncated DHCPv6 saved leases
* Only fork when the RA has a RDNSS option AND a valid prefix OR no DHCPv6 instruction.
* Handle BSD per interface rtadv kernel flag.
* Add a reject route for the delegated prefix so that unassigned prefixes don't go back upstream.
* If not specified, Delegated Prefixes will get an automatic SLA of the interface index. If the biggest SLA and the assigned prefix fits into a /64 then dhcpcd creates a /64 prefix so that SLAAC works. If bigger than /64 is needed then dhcpcd creates one rounded upto the nearest multiple of 8. Unless a configured SLA of 0 is assigned, a reject route for the Delegated Prefix is installed to stop unassigned addresses trying to be resolved upstream. Addresses added from Delegated Prefixes now have a default address suffix of 1 instead of using a SLAAC style address.
* Don't spam timezone updates unless its actually changed.
* Support ND6_IFF_OVERRIDE_RTADV on BSD.
* Document why we don't send both FQDN and hostname options.
* Respect RFC4861 MAX_RTR_SOLICITATION_DELAY as specified in section 6.3.7.
* RFC2131 section 4.4.1 states the client SHOULD wait a random time between one and ten seconds to desynchronize the use of DHCP at startup. Instead we wait a random time between zero and one second to mirror the more modern IPv6RS and DHCPv6 standards unless overridden by defining RFC2131_STRICT.
* Always send a carrier as it's no longer encapsulated in the IPv4 stack. When stopping and not departed, run with the STOPPED reason but do not process it in hooks.
* Poll kernel neighbour reachability (SIOCGNBRINFO_IN6) for each router instead of sending and listening for Neighbour Soliciation/Advertisement packets. The kernel is privy to a lot more reachability information than userland is.
* Ensure that ND6_IFF_PERFORMNUD is set.
* controlgroup option changes group ownership of the control socket.
* Should use arc4random_uniform when wanting a randon number between 1 and N. Improve the compat arc4random function a little and re-stir on fork.
* -4 and -6 are now mutually exclusive and when running on a single interface per protocol pidfiles are created. This means that other control options suchs as -x and -n will require the -4 or -6 option as well.
* Implement Stable Private Addresses for SLAAC as per RFC7217. Enable this as default in dhcpcd.conf.
* Log error condition if a new or changed Router Advertisment to avoid spamming the log.
* Add an IPv6 link-local address before upping the interface if needed. Bring an interface up when we start it and not during discovery. As such, stop waiting on carrier for a second if we did.
* Add gateway option to enable the gateway or an interface/profile. Ensure the option and require options disable the nooption option - last wins.
* Restarting ntp/yp are not critical and their initialisation continues in the background as well so we may as well background the restart commands for faster dhcpcd performance.
* Improvements to autoconf build emulation
* CARRIER/NOCARRIER are now run outside of the IPv4 runs
* validate domains correctly which contain a - on non bash shells
* don't remove IPv6 addresses from internal state when added as tentative
* HUP now rebinds, ALRM now releases - the -x and -k flags work as
they used to
* Add -M, --master option to force dhcpcd into master mode even if one
interface is specified on the command line
* Fix a crash when receiving a reconfigure key
* Dumping a DHCPv4 lease works again
* SEND_DAD code removed
* hoplimit is no longer defined for DHCPv6 messages
* hoplimit of 255 for IPv6 RS/ND message is now defined at the socket
instead of ancillary data with the message
* IAID must be inside an interface block.
* Detect IPv6 address flags on Linux.
* Check that we have ctrl_interface defined in wpa_supplicant.conf and pass this parameter to wpa_cli(8). If not set, warn about not interacting with wpa_supplicant(8).
* Skip Virtual Interface Masters. Currently this only applies to FreeBSD VAP masters as dhcpcd should only work on wlandev created clones.
* Fix handling of ARP failures, thanks to Sebastian Huber.
* Implement RFC 1321 MD5 Message-Digest if not provided in libc.
* Implement RFC 2104 HMAC Keyed Hashing.
* Implement RFC 3118 Authentication for DHCP Messages and RFC 3315 Authentication options.
* Add nodhcp and nodhcp6 directives. Thanks to Sebastian Huber for the initial patch and testing.
* Implement support for RFC 3203, FORCERENEW message.
* Implement Force Renew Nonce Capability option, RFC6704
* Support RECONFIGURE DHCPv6 messages.
* Add support for DHCP auto configuration, RFC 2563.
* Add support for the following RFCs
+ DHCP SLP Directory Agent, RFC2610
+ DHCP Name Service Search, RFC2937
+ DHCP PANA Authentication Agent, RFC5192
+ DHCP Lost Server, RFC5223
+ DHCP CAPWAP, RFC5417
+ DHCP Mobility Services, RFC5678
+ DHCP SIP UA, RFC6011
+ DHCP ANDSF, RFC6153
+ DHCP RDNSS Selection for MIF Nodes, RFC6731
+ DHCP TFTP Server Address, RFC5859
+ DHCP PXELINUX, RFC5071
+ DHCP Access Network Domain Name, RFC5986
+ DHCP Virtual Subnet Selection, RFC6607
+ DHCP Relay Agent Remote-ID, RFC4649
+ DHCP Relay Agent Subscriber-ID, RFC4580
+ DHCPv6 Relay-ID, RFC5460
+ DHCPv6 LIS Discovery, RFC5986
+ DHCPv6 SIP UA, RFC6011
+ DHCPv6 Network Boot, RFC5970
+ DHCPv6 Home Info Discovery in MIPv6, RFC6610
+ DHCPv6 RDNSS Selection for MIF Nodes, RFC6731
+ DHCPv6 Kerberos, RFC6784
+ DHCPv6 Relay-Triggered Reconfiguration, RFC6977
+ DHCPv6 SOL_MAX_RT, RFC7083
* Open UDP sockets for *.*.*.*:bootpc and $ip_address:bootpc to avoid kernel ICMP unreachable messages
* Moved global variables into context variables so dhcpcd is entirely thread safe.
dhcpcd doens't use threads, but it can now be used in a pure threads (ie no process) environment.
* Remove DEBUG_MEMORY guard and always free memory and resources. Remove all atexit(3) and exit(3) calls, instead exiting via the eloop.
* Replace get_line with sscanf where applicable.
* Remove custom set_cloexec and set_nonblock functions. Instead pass O_CLOEXEC or SOCK_CLOEXEC to open, socket, etc.
* Don't use PATH_MAX - we already know the maximum length from the initial directory and IF_NAMESIZE.
* Add a USE_SIGNALS define. If we're not using signals then we also create a control socket in the non MASTER case. We then use this to communicate instead of signals.
* Fix arping moving to the next test if we find the IP address but do not have a profile for it. Thanks to David McGurty for the analysis.
* Respect initial commandline arguments when rebooting via a signal.
* on BSD only flush RA routers and prefixes when trying to own them.
* Mark some data locations as read only and fix a build issue.
* Fix some possible NULL dereferences, CID 1153963.
* Fix CID: 1153964 and 1153966
* Add support for RFC3495 DHCP option for CableLabs Clients.
Note that for the TSP suboption 3 we only support the FQDN encoding.
* Init system detection moved to dhcpcd-run-hooks(8)
* Fix compile errors and warnings with IPv6 disabled.
* Fix NAK backoff when a server NAKs a REQUEST after a DISCOVER.
* Fix IPv6 ICMP filtering on Android (RS/RA now works)
* Fix sending of DHCPv6 FQDN when only hostname specified
* Add support for RFC3925 Vendor-Identifying Vendor Options
* Remove hard coded DHCP/DHCPv6 options and embed dhcpcd-definitions.conf.
This actually results in a slightly smaller binary than before and has the added advantage that the option definitions are now all held within one file.
* Change IAID to default from the last 4 bytes of the MAC address.
Rationale in the commit, but in a nutshell it allows for a stable IAID between reboots without persistent storage and across different OS's who name or number it differently to each other.
* RFC4242, Information Refresh Time Option for DHCPv6.
* Fix processing of inet4 addr in vendor options and terminate correctly.
* Preserve vendor encapsulated options.
* Fix renewal of Prefix Delegation. Only spam the log if a lease has a new address or changes the vltime of an existing address.
* Add noipv4 and noipv6 options.
* Warn about missing interfaces which require prefix delegation.
* If we timeout, remove any waitip config so that we daemonise correctly.
* Remove the IPv6 forwarding router check as valid use cases exist where you would want IPv6 RS/RA on a router.
* Pass the correct run directory to dhcpcd-run-hooks
