diff options
Diffstat (limited to 'sys/net/if_ethersubr.c')
| -rw-r--r-- | sys/net/if_ethersubr.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/sys/net/if_ethersubr.c b/sys/net/if_ethersubr.c index 5186406..2b82ecc 100644 --- a/sys/net/if_ethersubr.c +++ b/sys/net/if_ethersubr.c @@ -324,6 +324,10 @@ ether_output(struct ifnet *ifp, struct mbuf *m, /* * Add local net header. If no space in first mbuf, * allocate another. + * + * Note that we do prepend regardless of RT_HAS_HEADER flag. + * This is done because BPF code shifts m_data pointer + * to the end of ethernet header prior to calling if_output(). */ M_PREPEND(m, hlen, M_NOWAIT); if (m == NULL) |
