[  522.811474] netdevsim netdevsim609 eni609np1: renamed from eth1
[  522.908726] netdevsim netdevsim406 eni406np1: renamed from eth0
[  523.176692] Could not find device with ifindex 2000 in netnsfd 11
[  523.176922] Could not find netns with fd: 2000
[  523.177029] Cannot link a netdevsim to itself
[  523.177142] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).