Fix PPTP when used over WAN setup using PPPoE
WAN options were set using the system-wide pppd options file.
the pppd process read the system-wide options file (in /tmp/ppp/options) before reading any other configuration. This meant that really, only one pppd process could run at a time.
We now store the pppd options into /tmp/ppp/wanoptions and start the main pppd with: pppd file /tmp/ppp/wanoptions
That way, we can start subsequent pppd process without conflicting options.
(cherry picked from commit
82d98a546c763224b4b2b3da72ea4d29a2af9479)
Conflicts:
release/src/router/rc/pptp_client.c