VintageNet.max_interface_count

You're seeing just the function max_interface_count, go back to VintageNet module for more information.

Specs

max_interface_count() :: 1..100

Return the maximum number of interfaces controlled by VintageNet

Internal constraints mean that VintageNet can't manage an arbitrary number of interfaces and knowing the max can reduce some processing. The limit is set by the application config. Unless you need over 100 network interfaces, VintageNet's use of the Linux networking API is not likely to be an issue, though.