[  456.679429] netdevsim netdevsim505 eni505np1: renamed from eth0
[  456.680261] netdevsim netdevsim514 eni514np1: renamed from eth1
[  456.779800] Could not find device with ifindex 2000 in netnsfd 11
[  456.779959] Could not find netns with fd: 2000
[  456.780074] Cannot link a netdevsim to itself
[  456.780205] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).