Re: IP fragmentation (DF) and ip_no_pmtu_disc in 2.2 vs 2.4

From: Paul Jakma (paulj@itg.ie)
Date: Fri Dec 01 2000 - 14:13:22 EST

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    On Fri, 1 Dec 2000, Alan Cox wrote:

    > > Intel PXE uses tftp to download boot images and discards IP packets with
    > > the DF bit set; so a tftpd server on 2.4 with the default
    >
    > Then Intel PXE is buggy and you should go spank whoever provided
    > it as well as doing the workarounds. Supporting received frames
    > with DF set is mandatory.
    >

    SGI Indy PROM also has this behaviour (for bootp).

    Could we perhaps make ip_no_pmtu_disc a per interface option? the
    machine i use as bootp/tftp/nfs server is also a dial-up internet
    gateway, and it's a shame to have to lose pmtu discovery across the
    board.

    regards,

    --paulj

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