[  521.482050] netdevsim netdevsim650 eni650np1: renamed from eth1
[  521.578506] netdevsim netdevsim502 eni502np1: renamed from eth0
[  521.820655] Could not find device with ifindex 2000 in netnsfd 11
[  521.820925] Could not find netns with fd: 2000
[  521.821047] Cannot link a netdevsim to itself
[  521.821183] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).