[  523.005322] netdevsim netdevsim551 eni551np1: renamed from eth1
[  523.103275] netdevsim netdevsim345 eni345np1: renamed from eth0
[  523.330385] Could not find device with ifindex 2000 in netnsfd 11
[  523.330573] Could not find netns with fd: 2000
[  523.330663] Cannot link a netdevsim to itself
[  523.330784] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).