In summary it was routing issue, I needed to add a script in the /etc/ppp/ip-up.d folder, this script, called routes.sh would be run when the vpn/ppp interface came up.
/etc/ppp/ip-up.d/route
#!/bin/bash route add -net 10.10.251.32 netmask 255.255.255.255 dev ppp0 route add -net 10.10.247.1 netmask 255.255.255.255 dev ppp0 exit
Then I also needed to enable ipforwarding in sysctl.conf, the command: net.ipv4.ip_forward = 1
That was it.. set the routes when in the interface comes up, and enable forwarding.