[  484.163294] netdevsim netdevsim269 eni269np1: renamed from eth0
[  484.163983] netdevsim netdevsim639 eni639np1: renamed from eth1
[  484.245553] Could not find device with ifindex 2000 in netnsfd 11
[  484.245640] Could not find netns with fd: 2000
[  484.245682] Cannot link a netdevsim to itself
[  484.245743] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).