[ 1243.819287][T12778] netdevsim netdevsim421 eni421np1: renamed from eth0
[ 1243.930958][T12777] netdevsim netdevsim544 eni544np1: renamed from eth1
[ 1246.502629][T12770] Could not find device with ifindex 2000 in netnsfd 11
[ 1246.504435][T12770] Could not find netns with fd: 2000
[ 1246.505933][T12770] Cannot link a netdevsim to itself
[ 1246.507747][T12770] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).