[  522.137172] netdevsim netdevsim345 eni345np1: renamed from eth0
[  522.234136] netdevsim netdevsim688 eni688np1: renamed from eth1
[  522.493806] Could not find device with ifindex 2000 in netnsfd 11
[  522.494081] Could not find netns with fd: 2000
[  522.494215] Cannot link a netdevsim to itself
[  522.494360] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).