[  484.492624] netdevsim netdevsim263 eni263np1: renamed from eth0
[  484.492974] netdevsim netdevsim665 eni665np1: renamed from eth1
[  484.582313] Could not find device with ifindex 2000 in netnsfd 11
[  484.582401] Could not find netns with fd: 2000
[  484.582443] Cannot link a netdevsim to itself
[  484.582505] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).