* [Sysadmins] libvirt bridge and udp checksum
@ 2015-12-10 20:58 Anton Gorlov
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From: Anton Gorlov @ 2015-12-10 20:58 UTC (permalink / raw)
To: ALT Linux sysadmin discuss
КОллеги - в очередной раз наступил на старый баг при использовании
virtio network адаптера в гостевом окружении.
В обычном случае спасало правило
iptables -t mangle -A POSTROUTING -o virbr0 -p udp -m udp --dport 68 -j
CHECKSUM --checksum-fill
Но в случае если бридж "свой" собственный то подобное правило не
спасает. Можно конечно в гостевом окружении отключить tx checksum
offload, но интересно почему в 1 случае правило спасает а во 2 нет?
brctl show
bridge name bridge id STP enabled interfaces
br0 8000.7640d7486732 yes dummy0
vnet0
virbr0 8000.52540024aebf yes virbr0-nic
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2015-12-10 20:58 [Sysadmins] libvirt bridge and udp checksum Anton Gorlov
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