[  844.127051][T15787] netdevsim netdevsim450 eni450np1: renamed from eth0
[  844.143921][T15785] netdevsim netdevsim747 eni747np1: renamed from eth1
[  844.757474][T15774] Could not find device with ifindex 2000 in netnsfd 11
[  844.758270][T15774] Could not find netns with fd: 2000
[  844.758899][T15774] Cannot link a netdevsim to itself
[  844.759436][T15774] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).