diff options
| author |   dlg <dlg@openbsd.org> | 2019-04-02 10:50:16 +0000 |
|---|---|---|
| committer | dlg <dlg@openbsd.org> | 2019-04-02 10:50:16 +0000 |
| commit | 957fd304283991d93680c4292ff139796759c24b (patch) | |
| tree | a8e812d4464ad42aa748e36408ac4bcdf8732063 /sys/net/if_mpe.c | |
| parent | some mbuf ph_rtableid fixes (diff) | |
| download | wireguard-openbsd-957fd304283991d93680c4292ff139796759c24b.tar.xz wireguard-openbsd-957fd304283991d93680c4292ff139796759c24b.zip | |
clear the BCAST and MCAST mbuf flags for "outgoing" packets.
if these remain set then output on the underlying interface may
mistakenly be done with the wrong protocol type (eg, MPLS_MCAST
instead of MPLS), and to the wrong link layer address.
reported by Lee Nelson
the specific problem was identified by Mitchell Krome
Diffstat (limited to 'sys/net/if_mpe.c')
| -rw-r--r-- | sys/net/if_mpe.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/sys/net/if_mpe.c b/sys/net/if_mpe.c index bafe9d661bc..af5c61204d8 100644 --- a/sys/net/if_mpe.c +++ b/sys/net/if_mpe.c @@ -1,4 +1,4 @@ -/* $OpenBSD: if_mpe.c,v 1.88 2019/04/02 10:46:02 dlg Exp $ */ +/* $OpenBSD: if_mpe.c,v 1.89 2019/04/02 10:50:16 dlg Exp $ */ /* * Copyright (c) 2008 Pierre-Yves Ritschard <pyr@spootnik.org> @@ -198,6 +198,7 @@ mpe_start(struct ifnet *ifp) #endif m->m_pkthdr.ph_rtableid = sc->sc_rdomain; + CLR(m->m_flags, M_BCAST|M_MCAST); mpls_output(ifp0, m, &smpls, rt); if_put(ifp0); |