[Xen-users] Dom0 loses network connectivity after HVM guest shutdown/restart

[kefear <wojciech.wojcik@xxxxxxxxxxxxxx>]

My Debian Lenny Dom0 (kernel 2.6.26-2-xen-amd64) constantly loses network
connectivity after shutdown or restart one of Win2k8 guests. I have to
connect to it via KVM and issue ping to a random host to reenable it. I have
setup linux bridge manually because default shipped scripts don't work well
with bonding.

I can see in the logs that disables vifs for hosts that are being shutdown
and creates new ones

{code}
Jan  8 12:03:40 db-infra1 kernel: [79308.312352] xenbr0: port 4(tap1)
entering disabled state
Jan  8 12:03:40 db-infra1 kernel: [79308.472826] xenbr0: port 5(vif5.0)
entering disabled state
Jan  8 12:03:40 db-infra1 kernel: [79308.508112] xenbr0: port 5(vif5.0)
entering disabled state
Jan  8 12:03:41 db-infra1 kernel: [79309.373562] device tap1 entered
promiscuous mode
Jan  8 12:03:41 db-infra1 kernel: [79309.373671] xenbr0: port 4(tap1)
entering learning state
Jan  8 12:03:41 db-infra1 kernel: [79309.624300] device vif11.0 entered
promiscuous mode
Jan  8 12:03:41 db-infra1 kernel: [79309.628519] xenbr0: port 5(vif11.0)
entering learning state
Jan  8 12:03:44 db-infra1 kernel: [79312.493798] tap0: no IPv6 routers
present
Jan  8 12:03:44 db-infra1 kernel: [79312.624788] vif10.0: no IPv6 routers
present
Jan  8 12:03:49 db-infra1 kernel: [79317.460844] xenbr0: topology change
detected, propagating
Jan  8 12:03:49 db-infra1 kernel: [79317.460943] xenbr0: port 2(tap0)
entering forwarding state
Jan  8 12:03:49 db-infra1 kernel: [79317.619094] xenbr0: topology change
detected, propagating
Jan  8 12:03:49 db-infra1 kernel: [79317.619210] xenbr0: port 3(vif10.0)
entering forwarding state
Jan  8 12:03:51 db-infra1 kernel: [79319.512895] tap1: no IPv6 routers
present
Jan  8 12:03:51 db-infra1 kernel: [79319.946576] vif11.0: no IPv6 routers
present
Jan  8 12:03:56 db-infra1 kernel: [79324.532366] xenbr0: topology change
detected, propagating
Jan  8 12:03:56 db-infra1 kernel: [79324.532482] xenbr0: port 4(tap1)
entering forwarding state
Jan  8 12:03:56 db-infra1 kernel: [79324.783373] xenbr0: topology change
detected, propagating
Jan  8 12:03:56 db-infra1 kernel: [79324.783488] xenbr0: port 5(vif11.0)
entering forwarding state
{code}

Any help would be appreciated
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