[  757.030565][T14578] netdevsim netdevsim503 eni503np1: renamed from eth0
[  757.043328][T14580] netdevsim netdevsim680 eni680np1: renamed from eth1
[  757.614001][T14566] Could not find device with ifindex 2000 in netnsfd 11
[  757.614744][T14566] Could not find netns with fd: 2000
[  757.615118][T14566] Cannot link a netdevsim to itself
[  757.615916][T14566] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).