[  514.793818] netdevsim netdevsim697 eni697np1: renamed from eth1
[  514.891348] netdevsim netdevsim311 eni311np1: renamed from eth0
[  515.106991] Could not find device with ifindex 2000 in netnsfd 11
[  515.107184] Could not find netns with fd: 2000
[  515.107278] Cannot link a netdevsim to itself
[  515.107381] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).