[  523.370001] netdevsim netdevsim341 eni341np1: renamed from eth0
[  523.465552] netdevsim netdevsim691 eni691np1: renamed from eth1
[  523.722878] Could not find device with ifindex 2000 in netnsfd 11
[  523.723067] Could not find netns with fd: 2000
[  523.723187] Cannot link a netdevsim to itself
[  523.723299] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).