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    SubjectRe: can't connect to web site
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    Alessandro Suardi <asuardi@uninetcom.it> writes:

    > Alan Cox wrote:
    > >
    > > > Well, based on the fact that I can get to the site but not ping them, I
    > > > imagine they have disabled _all_ ICMP, including the rather important
    > > > ICMP_FRAG_NEEDED, breaking path mtu discovery. Their fault, not yours.
    > >
    > > Not this time. This one is a Linux breakage, fair and square
    > >
    >
    > As Jeremy Fitzhardinge said, it works here. "Aktiehandel Online" :)
    > (vanilla 2.2.3 btw)

    I don't think (although I don't know) this is a kernel issue, but I've
    seen a similar problem on a 2.2.3 machine. It turned out, though, that
    it was a YP/NIS problem-- the linux machine is configured as a
    secondary YP server, and for some reason (probably a weird timing
    issue when machines came back from a power failure) it "forgot" that
    it was serving the /etc/protocols file. This made all the machines
    using it as a server, as well as itself, think that it had an empty
    protocols file, and ping, traceroute, and the like got a "icmp:
    unknown protocol" error. Strangely, the more commonly used protocols
    didn't seem to have problems; IP and UDP stuff acted fine.

    Anyway, just something to look at-- try "ypcat protocols" to see if
    this is the problem (assuming you're using yp at all).

    The gross level info is: linux 2.2.3, debian 2.0, dual PPro200 SMP,
    ypwhich (yp-tools) 2.1, yp master is HPUX 10.20.

    in case this helps

    - M

    -=-=-=-=-=-=-=-=-=-=-=+=-=-=-=-=-=-=-=-=-=-=-=+=-=-=-=-=-=-=-=-=-=-=-=-
    Mark "Monty" Montague | monty@gg.caltech.edu | I don't do Windows(tm)
    -=-=-=-=-=-=-=-=-=-=-=+=-=-=-=-=-=-=-=-=-=-=-=+=-=-=-=-=-=-=-=-=-=-=-=-
    DON'T PANIC! I'm a trained professional, and far more | *Why* question
    qualified to panic in this situation than you are. | authority?
    -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

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