Reduce the total number of file descriptors #282
Description
Currently it seems each connection maintains two open file descriptors. I do not recall precisely what these are for.
From memory I believe one is in order to send packets from a specific source address (ie, bound to the address we received the original packet from the remote side). I believe it should be possible to reduce the total number of file descriptors in use, at a minimum by coalescing the sockets used for sending outbound frames based on the local address, effectively re-using them in such a manner that we can reduce the overall number of open file descriptors.
Based on what I've seen so far of the code this will be a non-trivial endeavour.
The other file descriptor if I recall relates to the pseudo tty for each ppp, I do not believe it's possible to reduce these, but again, would need to confirm.
Just logging this before I forget about it.