[  484.452468] netdevsim netdevsim510 eni510np1: renamed from eth0
[  484.453203] netdevsim netdevsim622 eni622np1: renamed from eth1
[  484.545877] Could not find device with ifindex 2000 in netnsfd 11
[  484.546038] Could not find netns with fd: 2000
[  484.546147] Cannot link a netdevsim to itself
[  484.546268] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).