[  521.947768] netdevsim netdevsim636 eni636np1: renamed from eth1
[  522.045171] netdevsim netdevsim313 eni313np1: renamed from eth0
[  522.270114] Could not find device with ifindex 2000 in netnsfd 11
[  522.270309] Could not find netns with fd: 2000
[  522.270402] Cannot link a netdevsim to itself
[  522.270521] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).