This is only a trace on vxlan interface on the host. not from within container namespace
ping-26819 [001] 3678.931358: fib_table_lookup: table 254 oif 0 iif 1 proto 17 0.0.0.0/40784 -> 10.244.2.4/1025 tos 0 scope 0 flags 0 ==> dev flannel.1 gw 10.244.2.0 src 10.244.0.0 err 0
ping-26819 [001] 3678.931387: fib_table_lookup: table 254 oif 0 iif 1 proto 17 10.244.0.0/40784 -> 10.244.2.4/1025 tos 0 scope 0 flags 0 ==> dev flannel.1 gw 10.244.2.0 src 10.244.0.0 err 0
ping-26819 [001] 3678.931468: fib_table_lookup: table 254 oif 0 iif 1 proto 1 0.0.0.0/0 -> 10.244.2.4/0 tos 0 scope 0 flags 0 ==> dev flannel.1 gw 10.244.2.0 src 10.244.0.0 err 0
ping-26819 [001] 3678.931485: fib_table_lookup: table 255 oif 0 iif 0 proto 0 0.0.0.0/0 -> 10.244.2.4/0 tos 0 scope 0 flags 0 ==> dev flannel.1 gw 10.244.2.0 src 10.244.0.0 err 0
ping-26819 [001] 3678.931499: net_dev_queue: dev=flannel.1 skbaddr=0xffff919236689800 len=98
ping-26819 [001] 3678.931500: net_dev_start_xmit: dev=flann