[  523.320291] netdevsim netdevsim511 eni511np1: renamed from eth0
[  523.416553] netdevsim netdevsim665 eni665np1: renamed from eth1
[  523.658003] Could not find device with ifindex 2000 in netnsfd 11
[  523.658253] Could not find netns with fd: 2000
[  523.658368] Cannot link a netdevsim to itself
[  523.658509] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).