[  489.102745] netdevsim netdevsim642 eni642np1: renamed from eth1
[  489.199865] netdevsim netdevsim399 eni399np1: renamed from eth0
[  489.391518] Could not find device with ifindex 2000 in netnsfd 11
[  489.391665] Could not find netns with fd: 2000
[  489.391738] Cannot link a netdevsim to itself
[  489.391823] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).