[  518.358077] netdevsim netdevsim745 eni745np1: renamed from eth1
[  518.456122] netdevsim netdevsim450 eni450np1: renamed from eth0
[  518.681083] Could not find device with ifindex 2000 in netnsfd 11
[  518.681299] Could not find netns with fd: 2000
[  518.681407] Cannot link a netdevsim to itself
[  518.681544] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).