[  484.093135] netdevsim netdevsim647 eni647np1: renamed from eth1
[  484.194393] netdevsim netdevsim297 eni297np1: renamed from eth0
[  484.584777] Could not find device with ifindex 2000 in netnsfd 11
[  484.584929] Could not find netns with fd: 2000
[  484.585018] Cannot link a netdevsim to itself
[  484.585133] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).