[  522.521805] netdevsim netdevsim606 eni606np1: renamed from eth1
[  522.619003] netdevsim netdevsim422 eni422np1: renamed from eth0
[  522.859119] Could not find device with ifindex 2000 in netnsfd 11
[  522.859321] Could not find netns with fd: 2000
[  522.859428] Cannot link a netdevsim to itself
[  522.859565] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).