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note that we intentionally violate RFC2553 for security reasons.

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Adviced by:	itojun
Obtained from:	NetBSD
This commit is contained in:
ume 2002-07-26 08:11:51 +00:00
parent 7968a1adb6
commit 2fb881e4ee
1 changed files with 13 additions and 12 deletions
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25
share/man/man4/inet6.4
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@ -413,6 +413,19 @@ Integer: trigger level of cached, unreferenced, protocol-cloned routes
which initiates dynamic adaptation (default 128).
.El
.Ss Interaction between IPv4/v6 sockets
By default,
.Nx
does not route IPv4 traffic to
.Dv AF_INET6
sockets.
The default behavior intentionally violates RFC2553 for security reasons.
Listen to two sockets if you want to accept both IPv4 and IPv6 traffic.
IPv4 traffic may be routed with certain
per-socket/per-node configuration, however, it is not recommended to do so.
Consult
.Xr ip6 4
for details.
.Pp
The behavior of
.Dv AF_INET6
TCP/UDP socket is documented in RFC2553.
@ -480,18 +493,6 @@ Users are advised to take care handling connections
from IPv4 mapped address to
.Dv AF_INET6
sockets.
.\".Pp
.\"Because of the above, by default,
.\"KAME/NetBSD and KAME/OpenBSD
.\"does not route IPv4 traffic to
.\".Dv AF_INET6
.\"sockets.
.\"Listen to two sockets if you want to accept both IPv4 and IPv6 traffic.
.\"On KAME/NetBSD, IPv4 traffic may be routed with certain
.\"per-socket/per-node configuration, however, it is not recommended.
.\"Consult
.\".Xr ip6 4
.\"for details.
.Sh SEE ALSO
.Xr ioctl 2 ,
.Xr socket 2 ,