[  489.495705] netdevsim netdevsim270 eni270np1: renamed from eth0
[  489.497653] netdevsim netdevsim581 eni581np1: renamed from eth1
[  489.586609] Could not find device with ifindex 2000 in netnsfd 11
[  489.586709] Could not find netns with fd: 2000
[  489.586765] Cannot link a netdevsim to itself
[  489.586821] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).