diff options
Diffstat (limited to 'sys/netinet/ip_output.c')
| -rw-r--r-- | sys/netinet/ip_output.c | 25 |
1 files changed, 14 insertions, 11 deletions
diff --git a/sys/netinet/ip_output.c b/sys/netinet/ip_output.c index 500feff..3314538 100644 --- a/sys/netinet/ip_output.c +++ b/sys/netinet/ip_output.c @@ -188,30 +188,33 @@ again: dst->sin_addr = ip->ip_dst; } /* - * If routing to interface only, - * short circuit routing lookup. + * If routing to interface only, short circuit routing lookup. + * The use of an all-ones broadcast address implies this; an + * interface is specified by the broadcast address of an interface, + * or the destination address of a ptp interface. */ - if (flags & IP_ROUTETOIF) { - if ((ia = ifatoia(ifa_ifwithdstaddr(sintosa(dst)))) == NULL && - (ia = ifatoia(ifa_ifwithnet(sintosa(dst)))) == NULL) { + if (flags & IP_SENDONES) { + if ((ia = ifatoia(ifa_ifwithbroadaddr(sintosa(dst)))) == NULL && + (ia = ifatoia(ifa_ifwithdstaddr(sintosa(dst)))) == NULL) { ipstat.ips_noroute++; error = ENETUNREACH; goto bad; } + ip->ip_dst.s_addr = INADDR_BROADCAST; + dst->sin_addr = ip->ip_dst; ifp = ia->ia_ifp; ip->ip_ttl = 1; - isbroadcast = in_broadcast(dst->sin_addr, ifp); - } else if (flags & IP_SENDONES) { - if ((ia = ifatoia(ifa_ifwithbroadaddr(sintosa(dst)))) == NULL) { + isbroadcast = 1; + } else if (flags & IP_ROUTETOIF) { + if ((ia = ifatoia(ifa_ifwithdstaddr(sintosa(dst)))) == NULL && + (ia = ifatoia(ifa_ifwithnet(sintosa(dst)))) == NULL) { ipstat.ips_noroute++; error = ENETUNREACH; goto bad; } ifp = ia->ia_ifp; - ip->ip_dst.s_addr = INADDR_BROADCAST; - dst->sin_addr = ip->ip_dst; ip->ip_ttl = 1; - isbroadcast = 1; + isbroadcast = in_broadcast(dst->sin_addr, ifp); } else if (IN_MULTICAST(ntohl(ip->ip_dst.s_addr)) && imo != NULL && imo->imo_multicast_ifp != NULL) { /* |
