Ok, my problem is solved. The rule pppoe inserts doesnt work when the pppoe is
a 'pppoe pass trough' feature found in Draytek Vigor series of modems. THis is
because the modems translation from pppoa to pppoe sheilds the correct
operation of mss negotiation. Hence :
--clamp-mss-to-pmtu
does
Just to clarify im running this on a gateway box (like theres many other
reasons id be using pppoe)
Actually the rule(s) are there, MY MISTAKE:
iptables-save > fw.txt
less fw.txt
-A FORWARD -o ppp0 -p tcp -m tcp --tcp-flags SYN,RST SYN -m tcpmss --mss 1412 -j
TCPMSS --clamp-mss-to-pmtu
-A FORWA
I have the same problem, mss clamp isnt working.
I dont know which i have kernal or user, i just did
aptitude install pppoe pppoeconf
on a up to date etch box.
then at the mss clamp pppoeconf dialog i said yes, clamp to 1452. However the dsl-provider file did not uncommment any of the pppoe
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