[  489.201485] netdevsim netdevsim489 eni489np1: renamed from eth0
[  489.298505] netdevsim netdevsim549 eni549np1: renamed from eth1
[  489.504652] Could not find device with ifindex 2000 in netnsfd 11
[  489.504938] Could not find netns with fd: 2000
[  489.505040] Cannot link a netdevsim to itself
[  489.505156] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).