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Re: kern/46961: Please support BCM57762 Ethernet arapter(Apple'sThunderbolt Ethernet Adapter)
The following reply was made to PR kern/46961; it has been noted by GNATS.
From: David Laight <david%l8s.co.uk@localhost>
Subject: Re: kern/46961: Please support BCM57762 Ethernet
arapter(Apple'sThunderbolt Ethernet Adapter)
Date: Mon, 17 Sep 2012 18:52:22 +0100
On Tue, Sep 18, 2012 at 02:53:10AM +0900, Izumi Tsutsui wrote:
> > One possibility is for supporting PPPoE.
> I've already checked that sys/net/if_pppoe.c has:
> >> #define PPPOE_MAXMTU (ETHERMTU - PPPOE_OVERHEAD)
> >> sc->sc_sppp.pp_if.if_mtu = PPPOE_MAXMTU;
> so I guess pppoe packets won't be larger than ETHER_MAX_LEN.
Not usually, but it would be very useful to allow the encasulation
of full sized ethernet packets.
Some routers (and ISP side kit) support it.
David Laight: david%l8s.co.uk@localhost
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