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On a non-simplex interface, check incoming multicast (this catches 

the broadcast case as well) to see if they came from us, and drop
them if they did.

This fixed IPv6 DAD on non-simplex interfaces, e.g. the Seeq 8003
found on my SGI Indy.
This commit is contained in:
thorpej 2001-06-12 15:03:26 +00:00
parent 2a8c778f1b
commit 4f7cad1c02
1 changed files with 21 additions and 9 deletions
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30
sys/net/if_ethersubr.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: if_ethersubr.c,v 1.83 2001/06/03 03:24:23 thorpej Exp $ */
/* $NetBSD: if_ethersubr.c,v 1.84 2001/06/12 15:03:26 thorpej Exp $ */
/*
* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
@ -661,6 +661,26 @@ ether_input(struct ifnet *ifp, struct mbuf *m)
return;
}
if (ETHER_IS_MULTICAST(eh->ether_dhost)) {
/*
* If this is not a simplex interface, drop the packet
* if it came from us.
*/
if ((ifp->if_flags & IFF_SIMPLEX) == 0 &&
memcmp(LLADDR(ifp->if_sadl), eh->ether_shost,
ETHER_ADDR_LEN) == 0) {
m_freem(m);
return;
}
if (memcmp(etherbroadcastaddr,
eh->ether_dhost, ETHER_ADDR_LEN) == 0)
m->m_flags |= M_BCAST;
else
m->m_flags |= M_MCAST;
ifp->if_imcasts++;
}
/* If the CRC is still on the packet, trim it off. */
if (m->m_flags & M_HASFCS) {
m_adj(m, -ETHER_CRC_LEN);
@ -669,14 +689,6 @@ ether_input(struct ifnet *ifp, struct mbuf *m)
ifp->if_lastchange = time;
ifp->if_ibytes += m->m_pkthdr.len;
if (ETHER_IS_MULTICAST(eh->ether_dhost)) {
if (memcmp(etherbroadcastaddr,
eh->ether_dhost, ETHER_ADDR_LEN) == 0)
m->m_flags |= M_BCAST;
else
m->m_flags |= M_MCAST;
ifp->if_imcasts++;
}
#if NBRIDGE > 0
/*