[  474.605651] netdevsim netdevsim501 eni501np1: renamed from eth0
[  474.605894] netdevsim netdevsim550 eni550np1: renamed from eth1
[  474.691190] Could not find device with ifindex 2000 in netnsfd 11
[  474.691354] Could not find netns with fd: 2000
[  474.691479] Cannot link a netdevsim to itself
[  474.691615] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).