[  476.493129] netdevsim netdevsim393 eni393np1: renamed from eth0
[  476.494094] netdevsim netdevsim720 eni720np1: renamed from eth1
[  476.589080] Could not find device with ifindex 2000 in netnsfd 11
[  476.589181] Could not find netns with fd: 2000
[  476.589233] Cannot link a netdevsim to itself
[  476.589294] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).