[  521.873717] netdevsim netdevsim411 eni411np1: renamed from eth0
[  521.970563] netdevsim netdevsim562 eni562np1: renamed from eth1
[  522.189170] Could not find device with ifindex 2000 in netnsfd 11
[  522.189380] Could not find netns with fd: 2000
[  522.189474] Cannot link a netdevsim to itself
[  522.189589] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).