[  472.359959] netdevsim netdevsim431 eni431np1: renamed from eth0
[  472.360770] netdevsim netdevsim542 eni542np1: renamed from eth0
[  472.445222] Could not find device with ifindex 2000 in netnsfd 11
[  472.445364] Could not find netns with fd: 2000
[  472.445452] Cannot link a netdevsim to itself
[  472.445558] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).