[  456.798586] netdevsim netdevsim300 eni300np1: renamed from eth0
[  456.799345] netdevsim netdevsim694 eni694np1: renamed from eth1
[  456.895592] Could not find device with ifindex 2000 in netnsfd 11
[  456.895706] Could not find netns with fd: 2000
[  456.895750] Cannot link a netdevsim to itself
[  456.895800] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).