[  514.425519] netdevsim netdevsim445 eni445np1: renamed from eth0
[  514.523325] netdevsim netdevsim521 eni521np1: renamed from eth1
[  514.749138] Could not find device with ifindex 2000 in netnsfd 11
[  514.749316] Could not find netns with fd: 2000
[  514.749405] Cannot link a netdevsim to itself
[  514.749510] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).