Hi,
We have a Supermicro server with 10G Card (82599EB 10-Gigabit SFI/SFP+) and ixgbe version 3.18.7. We are noticing something strange happening with the networking service. The service is going down randomly without any cause. The issue can recreated by running ethtool -t <eth>
Found the following on the logs:
Mar 20 23:41:59 <host> kernel: [ 2792.727776] ADDRCONF(NETDEV_UP): eth1: link is not ready
Mar 20 23:42:03 <host> kernel: [ 2796.802635] ixgbe 0000:05:00.0: eth1: detected SFP+: 3
Mar 20 23:42:04 <host> kernel: [ 2796.926539] ixgbe 0000:05:00.0: eth1: NIC Link is Up 10 Gbps, Flow Control: RX/TX
Mar 20 23:42:04 <host> kernel: [ 2796.927353] ADDRCONF(NETDEV_CHANGE): eth1: link becomes ready
Mar 20 23:42:14 <host> kernel: [ 2807.512585] eth1: no IPv6 routers present
When we debugged further, we found that the default route is getting disappeared somehow and shows up only after a network restart. From this forum , we suspected that "LRO " is causing the issue. We disabled it by:
ethtool -K <eth> lro off
which didn't fix. I also tried compiling ixgbe with 'CFLAGS_EXTRA="-DIXGBE_NO_LRO"' which also didnt help.
Can someone help with this case?
Thanks,
--
Vaisakh