I recently had ADSL service installed, and I have had some strange problems
with it connecting to certain WWW sites. For example: http://tempo.gsu.edu,
http://www.mbnanetaccess.com, http://www.aol.com, http://http.us.debian.org(!).
Sending email has also stopped working.
Almost everything else works fine. What happens is the host is looked up,
contacted, I receive a reply, then it stops at "transferring data". The email
messages all time out. I can receive email directly, but not send it using
exim now.
I'm using the pppoe package from Potato. The machine in question does ipmasq
for a couple of Linux machines, these sites (and a few others) fail on every
single machine including the one connected directly to the internet. What I
find to be really strange is that these sites work when I fall back to using
the old dialup on the same machine, including on the ipmasq'ed machines. So I
figure I must have something set up wrong, but I'm at a loss as to what it
might be. I tried setting the MTU and MRU to 1500 with the same results (and a
slight drop in transfer speed).
Here's what the net looks like from the ipmasqing machine (lo left out):
***
eth0 Link encap:Ethernet HWaddr 00:50:BA:DE:3D:3D
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:6659235 errors:0 dropped:133 overruns:0 frame:18
TX packets:3829180 errors:0 dropped:0 overruns:0 carrier:0
collisions:759 txqueuelen:100
Interrupt:10 Base address:0xfee0
eth1 Link encap:Ethernet HWaddr 00:A0:CC:D2:2D:B3
inet addr:192.168.1.1 Bcast:192.168.1.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:3818513 errors:0 dropped:0 overruns:0 frame:181
TX packets:6638415 errors:145 dropped:0 overruns:4 carrier:141
collisions:430178 txqueuelen:100
Interrupt:9 Base address:0xff00
ppp0 Link encap:Point-to-Point Protocol
inet addr:remote.ip P-t-P:207.69.62.1 Mask:255.255.255.255
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1
RX packets:2206279 errors:0 dropped:0 overruns:0 frame:0
TX packets:1346162 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:10
***
Thanks for any help, this has had me confused for days. I'd like to try 2.4's
kernel-based PPPoE with the hope that it's the software doing this, but not
being familiar with netfilter is stopping me at the moment.
Andrew W.
