[  774.837074][T14748] netdevsim netdevsim449 eni449np1: renamed from eth0
[  774.848974][T14750] netdevsim netdevsim647 eni647np1: renamed from eth1
[  775.417416][T14736] Could not find device with ifindex 2000 in netnsfd 11
[  775.417999][T14736] Could not find netns with fd: 2000
[  775.418377][T14736] Cannot link a netdevsim to itself
[  775.418821][T14736] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).