[  839.654595][T15777] netdevsim netdevsim436 eni436np1: renamed from eth0
[  839.668776][T15776] netdevsim netdevsim538 eni538np1: renamed from eth1
[  840.242148][T15765] Could not find device with ifindex 2000 in netnsfd 11
[  840.242899][T15765] Could not find netns with fd: 2000
[  840.243365][T15765] Cannot link a netdevsim to itself
[  840.243781][T15765] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).