[  523.541540] netdevsim netdevsim765 eni765np1: renamed from eth1
[  523.638354] netdevsim netdevsim456 eni456np1: renamed from eth0
[  523.861804] Could not find device with ifindex 2000 in netnsfd 11
[  523.862016] Could not find netns with fd: 2000
[  523.862099] Cannot link a netdevsim to itself
[  523.862203] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).