[  819.785330][T15803] netdevsim netdevsim420 eni420np1: renamed from eth0
[  819.787914][T15804] netdevsim netdevsim665 eni665np1: renamed from eth1
[  820.455360][T15791] Could not find device with ifindex 2000 in netnsfd 11
[  820.456760][T15791] Could not find netns with fd: 2000
[  820.457988][T15791] Cannot link a netdevsim to itself
[  820.459391][T15791] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).