[  521.673189] netdevsim netdevsim320 eni320np1: renamed from eth0
[  521.769794] netdevsim netdevsim516 eni516np1: renamed from eth1
[  522.041910] Could not find device with ifindex 2000 in netnsfd 11
[  522.042139] Could not find netns with fd: 2000
[  522.042249] Cannot link a netdevsim to itself
[  522.042386] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).