[  473.153842] netdevsim netdevsim278 eni278np1: renamed from eth0
[  473.154284] netdevsim netdevsim731 eni731np1: renamed from eth1
[  473.227690] Could not find device with ifindex 2000 in netnsfd 11
[  473.227774] Could not find netns with fd: 2000
[  473.227819] Cannot link a netdevsim to itself
[  473.227868] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).