[  518.253279] netdevsim netdevsim649 eni649np1: renamed from eth1
[  518.351918] netdevsim netdevsim342 eni342np1: renamed from eth0
[  518.558790] Could not find device with ifindex 2000 in netnsfd 11
[  518.558965] Could not find netns with fd: 2000
[  518.559062] Cannot link a netdevsim to itself
[  518.559159] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).