Subject: kern/36574: Can't add gif interface to bridge
To: None <,,>
From: None <>
List: netbsd-bugs
Date: 06/28/2007 12:30:00
>Number:         36574
>Category:       kern
>Synopsis:       Can't add gif interface to bridge
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Jun 28 12:30:00 +0000 2007
>Originator:     Michael Pounov
>Release:        NetBSD 4.99.21 -current at 2007-06-25
Can't add gif interface to bridge for transparent  ipsec.
In versions NetBSD 3.x; 4.x_BETAx and NetBSD 4.99.3 gif interfaces work normaly and bridge can add gif0.
ifconfig gif0 create
ifconfig gif0 tunnel
ifconfig gif0 mtu 1500 up
ifconfig bridge0 create
brconfig bridge0 add ex0 add gif0
... at this moment brconfig output error:: Invalid argument: gif0

I diff the brconfig in sbin/brconfig.c with work correctly version of sources in NetBSD 4.0_BETA2 at 2007-04-24 in my workstation, but user land  tool has no changes.

After that look in sys/net and find tiny changes in if_bridgevar.h. changes only type of variable ifbicu_buf to void*. Nothing scary and serious.
In if_bridge.c is same situation correct type-casts for new type declared in header.
At first view I can't see reason for this bug. ??????!!!!

Dummy speed-fix at this moment, may be this interface bridge driver use other version from netbsd-4 branch