Le mardi 25 octobre 2011 à 05:35 +0200, Eric Dumazet a écrit :

$ ip link show dev vlan.103
7: vlan.103@bond0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc
pfifo_fast state UP qlen 100
    link/ether 00:1e:0b:ec:d3:d2 brd ff:ff:ff:ff:ff:ff


But :

$ ethtool -k vlan.103
Offload parameters for vlan.103:
rx-checksumming: off
tx-checksumming: off
scatter-gather: off
tcp-segmentation-offload: off
udp-fragmentation-offload: off
generic-segmentation-offload: off
generic-receive-offload: on
large-receive-offload: off
rx-vlan-offload: off
tx-vlan-offload: off
ntuple-filters: off
receive-hashing: off

So basically all features but GRO are off.

By the way If I use vlan on top of nic, it seems OK, so bonding is the
suspect ?

$ ip link add link eth3 eth3.103 type vlan id 103
$ ifconfig eth3.103 up
$ ethtool -k eth3.103
Offload parameters for eth3.103:
rx-checksumming: on
tx-checksumming: on
scatter-gather: on
tcp-segmentation-offload: on
udp-fragmentation-offload: off
generic-segmentation-offload: on
generic-receive-offload: on
large-receive-offload: off
rx-vlan-offload: on
tx-vlan-offload: on
ntuple-filters: off
receive-hashing: off