[  489.376444] netdevsim netdevsim453 eni453np1: renamed from eth0
[  489.474132] netdevsim netdevsim623 eni623np1: renamed from eth1
[  489.670763] Could not find device with ifindex 2000 in netnsfd 11
[  489.670974] Could not find netns with fd: 2000
[  489.671068] Cannot link a netdevsim to itself
[  489.671189] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).