[  473.438062] netdevsim netdevsim344 eni344np1: renamed from eth0
[  473.438373] netdevsim netdevsim612 eni612np1: renamed from eth1
[  473.507020] Could not find device with ifindex 2000 in netnsfd 11
[  473.507103] Could not find netns with fd: 2000
[  473.507144] Cannot link a netdevsim to itself
[  473.507194] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).