Comment 28 for bug 286859

We have discussed a way for the kernel to export to userspace exactly which port does what (settings, data connection, etc.) but no one has implemented it yet, sorry.

It might be something that is done for SLE12, depending on if it becomes something that is a large problem. For now, HAL has been handling these kinds of things (which port is which), and Device Kit in the future might be the better place for it.

As for persistant names, yes, that can be done with a simple udev rule, but again, you don't know which port to name what ahead of time, so it is a case-by-case basis right now.

Sorry I can't be of more help, and glad it's now working for you.