[  497.038824] netdevsim netdevsim307 eni307np1: renamed from eth0
[  497.135114] netdevsim netdevsim540 eni540np1: renamed from eth1
[  497.367857] Could not find device with ifindex 2000 in netnsfd 11
[  497.368235] Could not find netns with fd: 2000
[  497.368323] Cannot link a netdevsim to itself
[  497.368437] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).