[  520.974472] netdevsim netdevsim387 eni387np1: renamed from eth0
[  521.071138] netdevsim netdevsim620 eni620np1: renamed from eth1
[  521.319401] Could not find device with ifindex 2000 in netnsfd 11
[  521.319685] Could not find netns with fd: 2000
[  521.319819] Cannot link a netdevsim to itself
[  521.319982] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).