[  514.832433] netdevsim netdevsim307 eni307np1: renamed from eth0
[  514.930151] netdevsim netdevsim531 eni531np1: renamed from eth1
[  515.167208] Could not find device with ifindex 2000 in netnsfd 11
[  515.167409] Could not find netns with fd: 2000
[  515.167510] Cannot link a netdevsim to itself
[  515.167609] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).