I'm hving this huge problem , not to be solved yet!
so it goes like this:
Running Mepis,Ibm thinkpad, cables modem and ethernet card.
disables any firewalls ( just to check if the firewall is the origin of the issue)
now , i use pppoe .. i have to dial my isp to get connected.
it connects.but i cannot surf a lot of webpages and in the same time i CAN connect to alots of other webpages! such as google.com and walla.co.il , but no way to connect to mepis.org or mepislovers.org!!!!
so you ask how do i surf here now? well i go into mepis os center to the network part and in the misc tab i change the dns manually to:
primary:192.115.106.11
secondary:194.90.1.5 ---> ??
i apply the changes and it afects immidiatly! and wallla! i can surf wherever i want!
and i tried saving this dns's in the resolv.conf file and
chattr the file ( becouse it changes every boot)
but than i cant connect at all!
heres an output of ifconfig (ip =x.x.x.x)
eth1 Link encap:Ethernet HWaddr 00:0A:E4:2E:75:7B
inet addr:172.24.x.x Bcast:255.255.255.255 Mask:255.255.224.0
inet6 addr: fe80::20a:e4ff:fe2e:757b/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:30942 errors:0 dropped:0 overruns:0 frame:0
TX packets:3382 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:10245980 (9.7 MiB) TX bytes:465891 (454.9 KiB)

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:50 errors:0 dropped:0 overruns:0 frame:0
TX packets:50 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:2268 (2.2 KiB) TX bytes:2268 (2.2 KiB)

ppp0 Link encap Point-to-Point Protocol
inet addr:212.x.x.x P-t-P:212.25.114.89 Mask:255.255.255.255
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1380 Metric:1
RX packets:2576 errors:0 dropped:0 overruns:0 frame:0
TX packets:2611 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:3
RX bytes:1637383 (1.5 MiB) TX bytes:275554 (269.0 -------------------------------------------
SO ANY IDEAS? i posed this issue in other mepis forums but no luck! i'm very new to linux and totally clueless!
thanks in advance!

P.S tried also in firefox -> about;config ->ipv6 both true and false!
didnt help:\

I vaguely remember something about scripts being run upon connect. Maybe it was ifup-eth0 in /etc/sysconfig/network. It's a RedHat type of setup, I don't know if Mepis has it.
Anyway, the idea is to run the script that adds your DNS servers upon connect. But why, in the first place, you have to do this? What are the DNS servers you're getting from your ISP?
You could also put something in your rc.local to accomplish this. But it looks to me like your DHCP setup is not right.

at first when i tried setting the conn up with mepis's pptp wizard i made a mistake!something with routing to tunnel! so before i knew it . i tried using a diffrent script..which was much harder 2 configure... i got back to the mepis pptp ! noticed my mistake!and walla!!!
thnx all!