[ 1304.010057][T12846] netdevsim netdevsim421 eni421np1: renamed from eth0
[ 1304.094623][T12844] netdevsim netdevsim630 eni630np1: renamed from eth1
[ 1306.607250][T12834] Could not find device with ifindex 2000 in netnsfd 11
[ 1306.610743][T12834] Could not find netns with fd: 2000
[ 1306.612112][T12834] Cannot link a netdevsim to itself
[ 1306.613821][T12834] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).