[  484.169059] netdevsim netdevsim301 eni301np1: renamed from eth0
[  484.169833] netdevsim netdevsim567 eni567np1: renamed from eth1
[  484.269468] Could not find device with ifindex 2000 in netnsfd 11
[  484.269559] Could not find netns with fd: 2000
[  484.269609] Cannot link a netdevsim to itself
[  484.269656] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).