[  756.770677][T14567] netdevsim netdevsim499 eni499np1: renamed from eth0
[  756.793441][T14570] netdevsim netdevsim751 eni751np1: renamed from eth1
[  757.322916][T14555] Could not find device with ifindex 2000 in netnsfd 11
[  757.328273][T14555] Could not find netns with fd: 2000
[  757.328886][T14555] Cannot link a netdevsim to itself
[  757.329289][T14555] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).