> > hmmm - I'd be very happy for some pointers, i.e. that this will be
> > resolved if I upgrade the Xen version I use. :)
> 
> Probably not. This panic indicates that the xennet backed (on your linux
> host)
> failed to handle the packet in less than 5s. This should probably not
> happen.
> Is the corresponding interface on the linux host up ?

i think this would be a yes - there's only one active nic in that system.

> > vif     = [ 'mac=FE:FD:00:DE:AD:19' ]
> 
> Maybe you need a bridge= here too ? I'm not sure if the interface is
> automatically added to a bridge if not specified.

vif14.0   Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
          BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

an interface for the domainU was added automatically, but won't be bridged
until I set the option. 
setting the option won't work:
vif     = [ 'mac=FE:FD:00:DE:AD:19, brigde=xen-br0'  ]
Error: Invalid vif specifier: mac=FE:FD:00:DE:AD:19, brigde=xen-br0

and the reason got obvious when I compared my system to the xen-live
cd: I don't have the interface xen-br0 in my domain0.

still, this is only Xen-, not NetBSD-related and the weekend to come 
will solve this ;)


thanks for Your help!

-- 
+++ NEU: GMX DSL_Flatrate! Schon ab 14,99 EUR/Monat! +++

GMX Garantie: Surfen ohne Tempo-Limit! http://www.gmx.net/de/go/dsl