On 2007-10-27, yavuz164@gmail.com <yavuz164@gmail.com> wrote: > After working fine for a while, (about 1/2 hour) Firefox (and > Konqueror too) suddenly start popping "server not found" window for > all destinations, > > ifconfig, shows PPP all right, but any ping to any of well known > servers like google, yahoo, even my own ISP all come back with > "unknown host". > > Back to back ppp-off/ppp-on immediately cures the condition. > > What can be missing in my setup? > > While the name resoulution is dead, data flow for p2p contnues down > and up o.k. > > I tried running a script that sends one-per-minute pings to my > provider, in the hope that it will keep things going, it did not help. > Firefox and Konqueror both had the same problem of not being able to > resolve the names after about 1/2 hour. > > /etc/ppp/resolve.conf always has the same data, two lines with two > nameserver IP addresses. > What about /etc/resolv.conf? It's possible your DSL modem is also a DHCP server, and the DHCP info could be overwriting the PPP nameservers. If eth0 is the interface connected to the DSL, does it have an IPv4 address? > I would appreaciate any ideas on this weird situation. > > Thanks in advance >