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Simplify markup a bit.

This commit is contained in:
wiz 2002-03-15 00:09:43 +00:00
parent 68616a4ba3
commit 1c444efedf
1 changed files with 8 additions and 12 deletions
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20
share/man/man4/gif.4
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@ -1,4 +1,4 @@
.\" $NetBSD: gif.4,v 1.20 2002/03/14 21:29:02 kleink Exp $
.\" $NetBSD: gif.4,v 1.21 2002/03/15 00:09:43 wiz Exp $
.\" $KAME: gif.4,v 1.24 2001/02/20 12:54:01 itojun Exp $
.\"
.\" Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
@ -106,20 +106,16 @@ With
.Dv IFF_LINK1 ,
.Nm
will copy ECN bits
.Po
.Dv 0x02
.Dv ( 0x02
and
.Dv 0x01
on IPv4 TOS byte or IPv6 traffic class byte
.Pc
on IPv4 TOS byte or IPv6 traffic class byte)
on egress and ingress, as follows:
.Bl -tag -width "Ingress" -offset indent
.It Ingress
Copy TOS bits except for ECN CE
.Po
masked with
.Dv 0xfe
.Pc
(masked with
.Dv 0xfe )
from
inner to outer.
set ECN CE bit to
@ -142,13 +138,13 @@ type of inner packet.
.Pp
When the inner packet is IPv4, the protocol field of the outer packet
is 4
.Po Dv IPPROTO_IPV4 Pc .
.Dv ( IPPROTO_IPV4 ) .
When the inner packet is IPv6, the protocol field of the outer packet
is 41
.Po Dv IPPROTO_IPV6 Pc .
.Dv ( IPPROTO_IPV6 ) .
When the inner packet is ISO CNLP, the protocol field of the outer packet
is 80
.Po Dv IPPROTO_EON Pc .
.Dv ( IPPROTO_EON ) .
.Ss Security
Malicious party may try to circumvent security filters by using
tunnelled packets.