Messages in this thread |  | | From | Frank Dekervel <> | Subject | mtu problem with masquerading+pppoe(adsl) setup | Date | Wed, 3 Oct 2001 15:00:17 +0200 |
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Hello, (i am sorry if this is the wrong place to ask)
despite the frequent discussions concerning this topic on usenet, i failed to solve my problem:
- i have a debian potatoe box that acts as a masquerading server for a heterogenous win2k/winnt/mac LAN. pppoe works fine, and so does masquerading ... almost
- the kernel i installed is the latest 2.2 kernel (2.2.19)
the problem:
i can't access some sites from the masq clients, while i can access them from the masq server. (like www.vitrine.be)
The problem seems to be widely known, and seems to be an MTU+no-fragment packets issue. and indeed: - the MTU on my LAN is 1500 bytes - the MTU on my ppp connection is 1492 bytes.
on the archives, i found the following solutions: - raising the ppp MTU to 1500 bytes. it won't work. even if i specify 1500, the mtu is still 1492. - lowering the mtu of the LAN to 1492 bytes. thats not an option according to my boss. - upgrade to something newer than 2.2.14. i run 2.2.19 and i still have the problem.
So my questions are:
- are there other options ? i read some vague german things about msschamp or something like that, but i don't know if they are even related.
- will an upgrade to linux 2.4 or the kernelspace pppoe driver fix my problem ? (i would like to keep my current setup, i don't know how difficult it is to upgrade a potatoe box to such a recent version ..) Some other observations: - win2k as masquerading server does not have the problem, but switching to win2k is not really an option since win2k seems to have severe problems with ftp connections. - the problem also occurs for some mail servers. Thanks in advance, Frank Dekervel -- Frank Dekervel Mechelsestraat 88 3000 Leuven frank.dekervel@student.kuleuven.([nospam]).ac.be - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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