[  488.523498] netdevsim netdevsim643 eni643np1: renamed from eth1
[  488.620117] netdevsim netdevsim348 eni348np1: renamed from eth0
[  488.840296] Could not find device with ifindex 2000 in netnsfd 11
[  488.840644] Could not find netns with fd: 2000
[  488.840766] Cannot link a netdevsim to itself
[  488.840900] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).