[  484.187563] netdevsim netdevsim423 eni423np1: renamed from eth0
[  484.188694] netdevsim netdevsim660 eni660np1: renamed from eth1
[  484.279199] Could not find device with ifindex 2000 in netnsfd 11
[  484.279290] Could not find netns with fd: 2000
[  484.279336] Cannot link a netdevsim to itself
[  484.279385] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).