[  522.113963] netdevsim netdevsim748 eni748np1: renamed from eth1
[  522.211566] netdevsim netdevsim436 eni436np1: renamed from eth0
[  522.435509] Could not find device with ifindex 2000 in netnsfd 11
[  522.435725] Could not find netns with fd: 2000
[  522.435814] Cannot link a netdevsim to itself
[  522.435910] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).