[  784.190730][T15644] netdevsim netdevsim457 eni457np1: renamed from eth0
[  784.212225][T15646] netdevsim netdevsim722 eni722np1: renamed from eth1
[  784.812156][T15632] Could not find device with ifindex 2000 in netnsfd 11
[  784.812659][T15632] Could not find netns with fd: 2000
[  784.813036][T15632] Cannot link a netdevsim to itself
[  784.813470][T15632] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).