[  485.686560] netdevsim netdevsim273 eni273np1: renamed from eth0
[  485.687756] netdevsim netdevsim615 eni615np1: renamed from eth1
[  485.772235] Could not find device with ifindex 2000 in netnsfd 11
[  485.772395] Could not find netns with fd: 2000
[  485.772517] Cannot link a netdevsim to itself
[  485.772667] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).