[  489.234712] netdevsim netdevsim434 eni434np1: renamed from eth0
[  489.332187] netdevsim netdevsim544 eni544np1: renamed from eth1
[  489.563598] Could not find device with ifindex 2000 in netnsfd 11
[  489.563948] Could not find netns with fd: 2000
[  489.564083] Cannot link a netdevsim to itself
[  489.564243] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).