Comment 2 for bug 1223360

I think you are right, this is much more complicated then I expected. Though, not less important. I tried to search for a blueprint to add the existing networking CLI commands to the Horizon but didn't find any.
I think that the simplest implementation will be the best, both for the programmer and the user. Means, while creating a new network assuming the creator knows which of the network types he want, a new network panel will open (vlan, local, gre), i.e. 3 different new network panels instead of the existing one now. This might affect other panel as well.
I can't measure the change and it's effects because I don't know the data structure of the system.
For now, you can just add the opurtunity of adding some new features to a network, such as ID, for the user to choose if using them or not.