[ 1369.933801][T13066] netdevsim netdevsim421 eni421np1: renamed from eth0
[ 1369.938119][T13065] netdevsim netdevsim735 eni735np1: renamed from eth1
[ 1372.857488][T13054] Could not find device with ifindex 2000 in netnsfd 11
[ 1372.858561][T13054] Could not find netns with fd: 2000
[ 1372.859423][T13054] Cannot link a netdevsim to itself
[ 1372.860841][T13054] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).