[  456.875270] netdevsim netdevsim319 eni319np1: renamed from eth0
[  456.876238] netdevsim netdevsim603 eni603np1: renamed from eth1
[  456.990984] Could not find device with ifindex 2000 in netnsfd 11
[  456.991106] Could not find netns with fd: 2000
[  456.991146] Cannot link a netdevsim to itself
[  456.991194] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).