[  492.920947] netdevsim netdevsim471 eni471np1: renamed from eth0
[  493.017320] netdevsim netdevsim620 eni620np1: renamed from eth1
[  493.245974] Could not find device with ifindex 2000 in netnsfd 11
[  493.246365] Could not find netns with fd: 2000
[  493.246461] Cannot link a netdevsim to itself
[  493.246570] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).