diff options
| -rw-r--r-- | share/man/man4/gre.4 | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/share/man/man4/gre.4 b/share/man/man4/gre.4 index 783a49a8100..6ff97cb5207 100644 --- a/share/man/man4/gre.4 +++ b/share/man/man4/gre.4 @@ -1,4 +1,4 @@ -.\" $OpenBSD: gre.4,v 1.27 2006/05/09 19:03:04 jmc Exp $ +.\" $OpenBSD: gre.4,v 1.28 2006/06/25 08:58:13 brad Exp $ .\" $NetBSD: gre.4,v 1.10 1999/12/22 14:55:49 kleink Exp $ .\" .\" Copyright 1998 (c) The NetBSD Foundation, Inc. @@ -184,7 +184,15 @@ alias on Host A for the Ethernet interface: and on the Cisco: .Pp .Dl ip route Y mask tunnelX -.Sh NOTE +.Sh NOTES +The MTU of +.Nm +interfaces is set to 1476 by default to match the value used by Cisco routers. +This may not be an optimal value, depending on the link between the two tunnel +endpoints. +It can be adjusted via +.Xr ifconfig 8 . +.Pp For correct operation, the .Nm device needs a route to the destination, that is less specific than the |