[  522.578485] netdevsim netdevsim303 eni303np1: renamed from eth0
[  522.675576] netdevsim netdevsim691 eni691np1: renamed from eth1
[  522.906458] Could not find device with ifindex 2000 in netnsfd 11
[  522.906657] Could not find netns with fd: 2000
[  522.906747] Cannot link a netdevsim to itself
[  522.906865] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).