[  647.956138][ T9984] netdevsim netdevsim380 eni380np1: renamed from eth0
[  647.979085][ T9987] netdevsim netdevsim691 eni691np1: renamed from eth1
[  648.821555][ T9973] Could not find device with ifindex 2000 in netnsfd 11
[  648.822507][ T9973] Could not find netns with fd: 2000
[  648.822939][ T9973] Cannot link a netdevsim to itself
[  648.823426][ T9973] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).