[  489.602178] netdevsim netdevsim654 eni654np1: renamed from eth1
[  489.698702] netdevsim netdevsim256 eni256np1: renamed from eth0
[  489.932642] Could not find device with ifindex 2000 in netnsfd 11
[  489.932929] Could not find netns with fd: 2000
[  489.933030] Cannot link a netdevsim to itself
[  489.933142] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).