[  522.089213] netdevsim netdevsim633 eni633np1: renamed from eth1
[  522.185762] netdevsim netdevsim486 eni486np1: renamed from eth0
[  522.427103] Could not find device with ifindex 2000 in netnsfd 11
[  522.427279] Could not find netns with fd: 2000
[  522.427369] Cannot link a netdevsim to itself
[  522.427474] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).