[  837.497394][T15735] netdevsim netdevsim313 eni313np1: renamed from eth0
[  837.505617][T15732] netdevsim netdevsim697 eni697np1: renamed from eth1
[  838.164841][T15721] Could not find device with ifindex 2000 in netnsfd 11
[  838.165483][T15721] Could not find netns with fd: 2000
[  838.165926][T15721] Cannot link a netdevsim to itself
[  838.166438][T15721] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).