[  489.182568] netdevsim netdevsim447 eni447np1: renamed from eth0
[  489.279866] netdevsim netdevsim615 eni615np1: renamed from eth1
[  489.487281] Could not find device with ifindex 2000 in netnsfd 11
[  489.487484] Could not find netns with fd: 2000
[  489.487585] Cannot link a netdevsim to itself
[  489.487715] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).