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    SubjectRe: 2.4.20 Broken Path MTU Discovery?
    On 03/02/2003 at 13:42 Alan Cox wrote:

    >The real problem and the reason you have to stop at some point and say "no
    >way" is that third parties can send spoof icmps and force the connection
    >down to stupid sizes otherwise. Forcing a BGP feed down to 68 bytes MTU
    >tends to knock ISP's off the net for example.

    Problem is that the parameter is not documented in filesystems/proc
    Also, it is not so easy to send spoofed icmps as the icmp must contain the original packet with high len that caused the icmp.

    Regards,
    Carlos velasco




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