[  486.334139] netdevsim netdevsim671 eni671np1: renamed from eth1
[  486.429631] netdevsim netdevsim311 eni311np1: renamed from eth0
[  486.662273] Could not find device with ifindex 2000 in netnsfd 11
[  486.662602] Could not find netns with fd: 2000
[  486.662709] Cannot link a netdevsim to itself
[  486.662816] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).