[  843.741174][T15800] netdevsim netdevsim345 eni345np1: renamed from eth0
[  843.760140][T15802] netdevsim netdevsim637 eni637np1: renamed from eth1
[  844.579465][T15787] Could not find device with ifindex 2000 in netnsfd 11
[  844.580447][T15787] Could not find netns with fd: 2000
[  844.580912][T15787] Cannot link a netdevsim to itself
[  844.581418][T15787] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).