[  521.481235] netdevsim netdevsim754 eni754np1: renamed from eth1
[  521.578760] netdevsim netdevsim389 eni389np1: renamed from eth0
[  521.824119] Could not find device with ifindex 2000 in netnsfd 11
[  521.824377] Could not find netns with fd: 2000
[  521.824525] Cannot link a netdevsim to itself
[  521.824673] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).