[  549.115325] netdevsim netdevsim256 eni256np1: renamed from eth0
[  549.212040] netdevsim netdevsim701 eni701np1: renamed from eth1
[  549.461844] Could not find device with ifindex 2000 in netnsfd 11
[  549.462062] Could not find netns with fd: 2000
[  549.462157] Cannot link a netdevsim to itself
[  549.462273] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).