[  457.538248] netdevsim netdevsim472 eni472np1: renamed from eth0
[  457.539366] netdevsim netdevsim604 eni604np1: renamed from eth1
[  457.634035] Could not find device with ifindex 2000 in netnsfd 11
[  457.634158] Could not find netns with fd: 2000
[  457.634211] Cannot link a netdevsim to itself
[  457.634265] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).