[  523.163286] netdevsim netdevsim508 eni508np1: renamed from eth0
[  523.259638] netdevsim netdevsim742 eni742np1: renamed from eth1
[  523.523319] Could not find device with ifindex 2000 in netnsfd 11
[  523.523555] Could not find netns with fd: 2000
[  523.523672] Cannot link a netdevsim to itself
[  523.523793] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).