[  511.818576] netdevsim netdevsim722 eni722np1: renamed from eth1
[  511.916638] netdevsim netdevsim393 eni393np1: renamed from eth0
[  512.176786] Could not find device with ifindex 2000 in netnsfd 11
[  512.177000] Could not find netns with fd: 2000
[  512.177113] Cannot link a netdevsim to itself
[  512.177233] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).