diff options
Diffstat (limited to 'external/unbound/util/netevent.c')
| -rw-r--r-- | external/unbound/util/netevent.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/external/unbound/util/netevent.c b/external/unbound/util/netevent.c index 9f1e86952..3bb894888 100644 --- a/external/unbound/util/netevent.c +++ b/external/unbound/util/netevent.c @@ -498,12 +498,16 @@ comm_point_send_udp_msg_if(struct comm_point *c, sldns_buffer* packet, cmsg = CMSG_FIRSTHDR(&msg); if(r->srctype == 4) { #ifdef IP_PKTINFO + void* cmsg_data; msg.msg_controllen = CMSG_SPACE(sizeof(struct in_pktinfo)); log_assert(msg.msg_controllen <= sizeof(control)); cmsg->cmsg_level = IPPROTO_IP; cmsg->cmsg_type = IP_PKTINFO; memmove(CMSG_DATA(cmsg), &r->pktinfo.v4info, sizeof(struct in_pktinfo)); + /* unset the ifindex to not bypass the routing tables */ + cmsg_data = CMSG_DATA(cmsg); + ((struct in_pktinfo *) cmsg_data)->ipi_ifindex = 0; cmsg->cmsg_len = CMSG_LEN(sizeof(struct in_pktinfo)); #elif defined(IP_SENDSRCADDR) msg.msg_controllen = CMSG_SPACE(sizeof(struct in_addr)); @@ -518,12 +522,16 @@ comm_point_send_udp_msg_if(struct comm_point *c, sldns_buffer* packet, msg.msg_control = NULL; #endif /* IP_PKTINFO or IP_SENDSRCADDR */ } else if(r->srctype == 6) { + void* cmsg_data; msg.msg_controllen = CMSG_SPACE(sizeof(struct in6_pktinfo)); log_assert(msg.msg_controllen <= sizeof(control)); cmsg->cmsg_level = IPPROTO_IPV6; cmsg->cmsg_type = IPV6_PKTINFO; memmove(CMSG_DATA(cmsg), &r->pktinfo.v6info, sizeof(struct in6_pktinfo)); + /* unset the ifindex to not bypass the routing tables */ + cmsg_data = CMSG_DATA(cmsg); + ((struct in6_pktinfo *) cmsg_data)->ipi6_ifindex = 0; cmsg->cmsg_len = CMSG_LEN(sizeof(struct in6_pktinfo)); } else { /* try to pass all 0 to use default route */ |