[  521.980887] netdevsim netdevsim463 eni463np1: renamed from eth0
[  522.077845] netdevsim netdevsim691 eni691np1: renamed from eth1
[  522.331321] Could not find device with ifindex 2000 in netnsfd 11
[  522.331586] Could not find netns with fd: 2000
[  522.331708] Cannot link a netdevsim to itself
[  522.331859] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).