I am establishing an l2tp connection with IPSEC between two hosts and when the link comes up a route is added on the client side for 192/8 pointing out the newly established ppp interface. I can find no reference to 192/8 anywhere in /etc or in my home directory. Is this something built into the binary for some reason?
Opps, just found it. It was:
in file /etc/ppp/ip-up
Strange that by default it wants to route the entire /8 of your pppd address, but that's easy enough to edit.