[  475.911842] netdevsim netdevsim403 eni403np1: renamed from eth0
[  475.913026] netdevsim netdevsim723 eni723np1: renamed from eth0
[  476.012036] Could not find device with ifindex 2000 in netnsfd 11
[  476.012168] Could not find netns with fd: 2000
[  476.012219] Cannot link a netdevsim to itself
[  476.012281] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).