[Users] Arp update / sendarp in case of machine movement ?
Robert Heinzmann
Robert.Heinzmann at 1und1.de
Tue Jul 14 05:33:35 EDT 2009
Hello,
I have a question regarding ARP updates.
Network Setup: venet with proxy arp.
When movin a VE from one host to another (via DRBD: node1:shutdown,
switch drbd , node2:start) the IP/MAC combination needs to be
re-advertised so that the ARP caches are flushed. This can be done with
"sendarp". Otherwise the host is not reachable.
Is this integrated into the OpenVZ command utilities ? How can I
integrate this command that it alsways is running on:
1) Every VE start
2) Every IP add
My Idea:
Custom add_net and vps.mount hook scripts, however because this such a
general issue, I thing someone already found a elegang solution for this
?
Regards,
Robert
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Robert Heinzmann
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