[  778.166698][T14774] netdevsim netdevsim377 eni377np1: renamed from eth0
[  778.182758][T14776] netdevsim netdevsim643 eni643np1: renamed from eth1
[  778.746000][T14762] Could not find device with ifindex 2000 in netnsfd 11
[  778.746577][T14762] Could not find netns with fd: 2000
[  778.746954][T14762] Cannot link a netdevsim to itself
[  778.747384][T14762] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).