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SubjectRe: IPSEC transport mode w/2.2.x kernels and large packets
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> Yes. We are buggy here and draft-ietf-tcpimpl-pmtud-03
> explicitly announces us buggy 8)
>
> Apparently, they forgot about ax.25.

Someone should flame them before they make it past draft status I guess.
They regularly forget low mtu radio links. Half of them seem to have forgotten
modems 8)


> I believe. But do not understand. Seems, AX.25 is reliable protocol, is not it?
> Then fragments are delivered reliably and you can only win of the fact,
> that frames traversing internet are of 576 bytes.

AX.25 IP is normally run in UI mode (datagram mode - UI being the name of the
LAPB frame used for this [Unnumbered Information]), so no. And in 'reliable'
mode the hop by hop lapb RR frames murder the link more than IP retransmits

Alan


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