[  521.055866] netdevsim netdevsim615 eni615np1: renamed from eth1
[  521.153545] netdevsim netdevsim384 eni384np1: renamed from eth0
[  521.392133] Could not find device with ifindex 2000 in netnsfd 11
[  521.392294] Could not find netns with fd: 2000
[  521.392367] Cannot link a netdevsim to itself
[  521.392453] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).