[  522.241559] netdevsim netdevsim471 eni471np1: renamed from eth0
[  522.338429] netdevsim netdevsim753 eni753np1: renamed from eth1
[  522.573776] Could not find device with ifindex 2000 in netnsfd 11
[  522.573948] Could not find netns with fd: 2000
[  522.574039] Cannot link a netdevsim to itself
[  522.574131] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).