[  512.799166] netdevsim netdevsim629 eni629np1: renamed from eth1
[  512.897006] netdevsim netdevsim446 eni446np1: renamed from eth0
[  513.097616] Could not find device with ifindex 2000 in netnsfd 11
[  513.097832] Could not find netns with fd: 2000
[  513.097922] Cannot link a netdevsim to itself
[  513.098025] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).