[  850.911448][T15973] netdevsim netdevsim473 eni473np1: renamed from eth0
[  850.923963][T15976] netdevsim netdevsim621 eni621np1: renamed from eth1
[  851.526372][T15961] Could not find device with ifindex 2000 in netnsfd 11
[  851.527158][T15961] Could not find netns with fd: 2000
[  851.527746][T15961] Cannot link a netdevsim to itself
[  851.528348][T15961] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).