[  523.621753] netdevsim netdevsim320 eni320np1: renamed from eth0
[  523.719468] netdevsim netdevsim512 eni512np1: renamed from eth1
[  523.926363] Could not find device with ifindex 2000 in netnsfd 11
[  523.926535] Could not find netns with fd: 2000
[  523.926624] Cannot link a netdevsim to itself
[  523.926728] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).