[  484.292230] netdevsim netdevsim685 eni685np1: renamed from eth1
[  484.392930] netdevsim netdevsim484 eni484np1: renamed from eth0
[  484.761712] Could not find device with ifindex 2000 in netnsfd 11
[  484.761911] Could not find netns with fd: 2000
[  484.762016] Cannot link a netdevsim to itself
[  484.762133] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).