[  485.842661] netdevsim netdevsim393 eni393np1: renamed from eth0
[  485.844364] netdevsim netdevsim722 eni722np1: renamed from eth1
[  485.938932] Could not find device with ifindex 2000 in netnsfd 11
[  485.939028] Could not find netns with fd: 2000
[  485.939090] Cannot link a netdevsim to itself
[  485.939151] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).