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xen-bugs
[Xen-bugs] [Bug 753] bonding + vlans + bridging
http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=753
------- Comment #13 from kfh.xen@xxxxxx 2006-11-28 05:54 -------
(In reply to comment #12)
> Hi,
>
> I believe your problem is as follows,
> veth0 sends arp-request for ex. IP 1.2.3.4 to mac broadcast.
> vlanXXX-br forwards the frame and marks "veth0 mac" as belonging to vif0.0
> port.
> bond0 sends the frame through ex. eth0.
> The switch connected to eth0 floods all ports except the incoming port (eth0),
> and marks "veth0 mac" as belonging to eth0 port.
> The flood includes the eth1 port.
> The bridge vlanXXX-br forwards the frame and marks "veth0 mac" as belonging to
> vlanXXX port.
>
> The destination (1.2.3.4) sends arp reply to "veth0 mac".
> The switch connected to eth0/eth1, sends the reply to the eth0 port.
> The bridge vlanXXX-br blocks the frame as it believes the destination belongs
> to vlanXXX port.
You can verify the above as follows:
Make sure domU net is quiet...
In dom0 "watch -n 1 brctl showmacs vlanXXXX-br".
Note the port containing "vif0.0 mac".
In domU "ping non-existing-addr-on-domU-lan" on other console/xterm/...
If you see "veth0 mac" on other port than "vif0.0 mac", the patches from
comment #12 helps
Regards,
/Kristian Høgh
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