[  817.573757][T15842] netdevsim netdevsim257 eni257np1: renamed from eth0
[  817.584474][T15840] netdevsim netdevsim758 eni758np1: renamed from eth1
[  818.202567][T15828] Could not find device with ifindex 2000 in netnsfd 11
[  818.203246][T15828] Could not find netns with fd: 2000
[  818.203708][T15828] Cannot link a netdevsim to itself
[  818.204225][T15828] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).