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Take into account the two byte PPP protocol discrimator following the PPPoE 

header when calculating the MTU. Ooops...

Thanks to Mario Kemper for noting this.
This commit is contained in:
martin 2001-06-24 20:35:50 +00:00
parent 8c8d2fe9a8
commit 74f0920eda
1 changed files with 2 additions and 2 deletions
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4
sys/net/if_pppoe.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: if_pppoe.c,v 1.3 2001/06/18 12:32:47 martin Exp $ */
/* $NetBSD: if_pppoe.c,v 1.4 2001/06/24 20:35:50 martin Exp $ */
/*
* Copyright (c) 2001 Martin Husemann. All rights reserved.
@ -177,7 +177,7 @@ pppoeattach()
for (sc = pppoe_softc; i < NPPPOE; sc++) {
sprintf(sc->sc_sppp.pp_if.if_xname, "pppoe%d", i++);
sc->sc_sppp.pp_if.if_softc = sc;
sc->sc_sppp.pp_if.if_mtu = ETHERMTU - PPPOE_HEADERLEN;
sc->sc_sppp.pp_if.if_mtu = ETHERMTU - PPPOE_HEADERLEN - 2; /* two byte PPP protocol discriminator, then IP data */
sc->sc_sppp.pp_if.if_flags = IFF_SIMPLEX | IFF_POINTOPOINT
| IFF_MULTICAST | IFF_LINK1; /* auto "dial" */
sc->sc_sppp.pp_if.if_type = IFT_PPP;