Networking is going down on some of our machines. This is happening very randomly. Restarting networking is fixing the issue. I found the following in the kernel logs:
Mar 19 18:19:05 <host> kernel: [4854950.244533] ADDRCONF(NETDEV_UP): eth1: link is not ready Mar 19 18:19:05 <host> kernel: [4854950.465902] ixgbe: eth1 NIC Link is Up 10 Gbps, Flow Control: None Mar 19 18:19:05 <host> kernel: [4854950.466895] ADDRCONF(NETDEV_CHANGE): eth1: link becomes ready Mar 19 18:19:16 <host> kernel: [4854960.725876] eth1: no IPv6 routers present
We have 10g card installed on these servers. (Intel Corporation 82599EB 10-Gigabit SFI/SFP+).
OS: Debian 6.0
ixgbe version: 3.18.7
Can someone help me with this ?