[  487.284624] netdevsim netdevsim316 eni316np1: renamed from eth0
[  487.384850] netdevsim netdevsim620 eni620np1: renamed from eth1
[  487.744396] Could not find device with ifindex 2000 in netnsfd 11
[  487.744549] Could not find netns with fd: 2000
[  487.744641] Cannot link a netdevsim to itself
[  487.744743] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).