[  772.670262][T14504] netdevsim netdevsim321 eni321np1: renamed from eth0
[  772.686405][T14505] netdevsim netdevsim731 eni731np1: renamed from eth1
[  773.241455][T14492] Could not find device with ifindex 2000 in netnsfd 11
[  773.242038][T14492] Could not find netns with fd: 2000
[  773.242505][T14492] Cannot link a netdevsim to itself
[  773.243013][T14492] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).