[  523.370843] netdevsim netdevsim648 eni648np1: renamed from eth1
[  523.466457] netdevsim netdevsim472 eni472np1: renamed from eth0
[  523.734833] Could not find device with ifindex 2000 in netnsfd 11
[  523.735034] Could not find netns with fd: 2000
[  523.735130] Cannot link a netdevsim to itself
[  523.735258] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).