[  486.379101] netdevsim netdevsim744 eni744np1: renamed from eth1
[  486.479862] netdevsim netdevsim509 eni509np1: renamed from eth0
[  486.854616] Could not find device with ifindex 2000 in netnsfd 11
[  486.854767] Could not find netns with fd: 2000
[  486.854851] Cannot link a netdevsim to itself
[  486.854958] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).