[ 1220.572667][T11129] netdevsim netdevsim639 eni639np1: renamed from eth1
[ 1220.698792][T11130] netdevsim netdevsim506 eni506np1: renamed from eth0
[ 1223.938773][T11122] Could not find device with ifindex 2000 in netnsfd 11
[ 1223.939587][T11122] Could not find netns with fd: 2000
[ 1223.940539][T11122] Cannot link a netdevsim to itself
[ 1223.941377][T11122] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).