misc/164495: connect double head igb to switch cause system to halt

[Eugen Konkov]

>Number:         164495
>Category:       misc
>Synopsis:       connect double head igb to switch cause system to halt
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Wed Jan 25 21:00:02 UTC 2012
>Closed-Date:
>Last-Modified:
>Originator:     Eugen Konkov
>Release:        latest 10.0-CURRENT have same behaviour
>Organization:
ISP FreeLine
>Environment:
FreeBSD 9.0-CURRENT FreeBSD 9.0-CURRENT #3: Tue Jan 24 17:18:46 UTC 2012     :/usr/obj/usr/src/sys/KES_KERN_v9  i386

>Description:
I have igb0 and igb1 connected to switch to port, for example, 3 and 4, each port have vlan5, and vlan6 configured,



vlan5,vlan6>>---SW----<<vlan5,vlan6
.............../\
..............|..|
...........igb0..igb1
igb have no any ip addressed configured
through switch goes traffic about 100-200Mbit/s

after about of two hour of work server halt. it has no any react to keyboard and network, no error messages on monitor. Only hard turn OFF/ON helps to wakeup server.
>How-To-Repeat:

>Fix:


>Release-Note:
>Audit-Trail:
>Unformatted: