PHARscape

Paul

Sometimes everything works but you still can't see the internet. This could be because the routing table has not been updated or perhaps the list of DNS servers is not correct.

When PPP makes a connection it gets the gateway address and a list of DNS servers from the remote computer. We can use PPPD scripts to make changes to our Linux system so that our computer knows about the internet.

PPPD will run /etc/ppp/ip-up when a PPP conncetion is made. On Fredora/Redhat systems that script will also call /etc/ppp/ip-up.local.

The principle is to put your own commands into /etc/ppp/ip-up.local. We can use that script to update the DNS and routing inforamtion:

/etc/ppp/ip-up.local
###########################################
PATH=/sbin:/usr/sbin:/bin:/usr/bin
export PATH
echo "created by pppd" > /etc/resolv.conf
echo "nameserver ${DNS1}" >> /etc/resolv.conf
echo "nameserver ${DNS2}" >> /etc/resolv.conf
chmod go+r /etc/resolv.conf

route del default
route add default gw ${IPREMOTE}
###########################################

You may need to make it executable:
chmod +x /etc/ppp/ip-up.local

Paul