port-amd64/45710: xennet0 netbsd5.1 domu on debian6 dom0

[billc%NetBSD.org@localhost]

>Number:         45710
>Category:       port-amd64
>Synopsis:       domu xennet0 can not bridge correctly
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    port-amd64-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Dec 13 22:45:00 +0000 2011
>Originator:     William J. Coldwell
>Release:        NetBSD 5.1_STABLE
>Organization:
NetBSD
>Environment:
        
        
System: NetBSD morden.NetBSD.org 5.1_STABLE NetBSD 5.1_STABLE (NBFTP) #0: Sat 
Jun 11 07:14:02 UTC 2011 
root%franklin.NetBSD.org@localhost:/home/netbsd/5/i386/kern-compile/NBFTP amd64
Architecture: x86_64
Machine: amd64
>Description:
launch a XEN_INSTALL_DOMU on a debian6/XEN4.0.1 DOM0, and nothing I do, nor the 
bridges I create or
let xen's network-script do, can get to the outside world.  

>How-To-Repeat:
I've taken multiple suggestions frompeople on both letting xen handle the 
bridge 
of eth0 or not letting xen handle it and xenbr0 it
with eth0 and I don't even see packets make it to the vifX.x.
>Fix: