[  518.305062] netdevsim netdevsim449 eni449np1: renamed from eth0
[  518.402483] netdevsim netdevsim574 eni574np1: renamed from eth1
[  518.636607] Could not find device with ifindex 2000 in netnsfd 11
[  518.636785] Could not find netns with fd: 2000
[  518.636870] Cannot link a netdevsim to itself
[  518.636955] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).