[  518.346110] netdevsim netdevsim510 eni510np1: renamed from eth0
[  518.443958] netdevsim netdevsim641 eni641np1: renamed from eth1
[  518.662879] Could not find device with ifindex 2000 in netnsfd 11
[  518.663040] Could not find netns with fd: 2000
[  518.663113] Cannot link a netdevsim to itself
[  518.663200] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).