[  819.099370][T14779] netdevsim netdevsim509 eni509np1: renamed from eth0
[  819.112923][T14781] netdevsim netdevsim667 eni667np1: renamed from eth1
[  819.661978][T14767] Could not find device with ifindex 2000 in netnsfd 11
[  819.662598][T14767] Could not find netns with fd: 2000
[  819.663060][T14767] Cannot link a netdevsim to itself
[  819.663617][T14767] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).