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On 19/05/22 20:58, Richard Lucassen wrote:
I have no idea if this can have something to do with it, but not a very
long time ago I had two Dell R210 servers connected through a simple
failover bond0. The issue I found was that somehow these bond0 devices
on two *different* servers got the *same* fixed MAC address. After some
searching I stumbled upon this:
https://blog.sigterm.se/posts/a-bonding-exercise/
That's a very interesting reading, thank's for the link.
Anyway I checked all bridge mac address on all server, and they are all
different (they were anyway installed indipendently and have different
machine-id).
I had some discussion afterward with Patrik and I ended up in adding a
fixed MAC address in the /etc/network/interfaces stanza, e.g.:
hwaddress ether 4a:89:66:60:e4:97
I think this can solve MAC conflicts (I'll try anyway) but I'm not
seeing any duplicate MAC, and I got problem only between the VM inside a
bridge and this specific host. The host is perfectly reachable from
everywere.
What I got is the same problem described here (I found this just this
morning):
https://forum.proxmox.com/threads/ve-7-1-10-slow-to-forward-arp-replies-over-bridge.106429/
a VM has a port inside the bridge that does not match the one used by
its tap interface,
I'll investigate the issue explained in this article referenced there:
https://bugs.launchpad.net/neutron/+bug/1738659
Simone
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