[  457.155132] netdevsim netdevsim320 eni320np1: renamed from eth0
[  457.156015] netdevsim netdevsim623 eni623np1: renamed from eth0
[  457.251179] Could not find device with ifindex 2000 in netnsfd 11
[  457.251335] Could not find netns with fd: 2000
[  457.251447] Cannot link a netdevsim to itself
[  457.251575] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).