[  521.601021] netdevsim netdevsim313 eni313np1: renamed from eth0
[  521.699498] netdevsim netdevsim697 eni697np1: renamed from eth1
[  521.899078] Could not find device with ifindex 2000 in netnsfd 11
[  521.899233] Could not find netns with fd: 2000
[  521.899318] Cannot link a netdevsim to itself
[  521.899407] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).