[  521.053573] netdevsim netdevsim514 eni514np1: renamed from eth1
[  521.150433] netdevsim netdevsim330 eni330np1: renamed from eth0
[  521.401619] Could not find device with ifindex 2000 in netnsfd 11
[  521.401848] Could not find netns with fd: 2000
[  521.401956] Cannot link a netdevsim to itself
[  521.402074] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).