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