First hnet-based version.

[odhcp6c.git] / src / dhcpv6.c

diff --git a/src/dhcpv6.c b/src/dhcpv6.c
index da920ce21c06aa405feee11652f7317502d1a5a2..013e215c6555d1a0f2ffa7cf794efb5f04799c73 100644 (file)
--- a/src/dhcpv6.c
+++ b/src/dhcpv6.c
@@ -135,7 +135,8 @@ int init_dhcpv6(const char *ifname, int request_pd)
                        htons(DHCPV6_OPT_DNS_DOMAIN),
                        htons(DHCPV6_OPT_NTP_SERVER),
                        htons(DHCPV6_OPT_SIP_SERVER_A),
-                       htons(DHCPV6_OPT_SIP_SERVER_D)};
+                          htons(DHCPV6_OPT_PREFIX_CLASS)
+                         };
        odhcp6c_add_state(STATE_ORO, oro, sizeof(oro));
 
 
@@ -520,7 +521,7 @@ static int dhcpv6_handle_advert(_unused enum dhcpv6_msg orig,
                        cand.preference -= 2000;
                } else if (otype == DHCPV6_OPT_PREF && olen >= 1 &&
                                cand.preference >= 0) {
-                       cand.preference = odata[1];
+                       cand.preference = odata[0];
                } else if (otype == DHCPV6_OPT_RECONF_ACCEPT) {
                        cand.wants_reconfigure = true;
                } else if (otype == DHCPV6_OPT_IA_PD && request_prefix) {
@@ -725,11 +726,11 @@ static uint32_t dhcpv6_parse_ia(void *opt, void *end)
        uint16_t otype, olen;
        uint8_t *odata;
 
-       struct odhcp6c_entry entry = {IN6ADDR_ANY_INIT,
-                       0, 0, IN6ADDR_ANY_INIT, 0, 0};
-
        // Update address IA
        dhcpv6_for_each_option(opt, end, otype, olen, odata) {
+          struct odhcp6c_entry entry = {IN6ADDR_ANY_INIT,
+                                        0, 0, IN6ADDR_ANY_INIT, 0, 0, 0};
+
                if (otype == DHCPV6_OPT_IA_PREFIX) {
                        struct dhcpv6_ia_prefix *prefix = (void*)&odata[-4];
                        if (olen + 4U < sizeof(*prefix))
@@ -743,6 +744,14 @@ static uint32_t dhcpv6_parse_ia(void *opt, void *end)
 
                        entry.length = prefix->prefix;
                        entry.target = prefix->addr;
+                       uint16_t stype, slen;
+                       uint8_t *sdata;
+
+                        // Find prefix class, if any
+                       dhcpv6_for_each_option(odata, odata + olen,
+                                               stype, slen, sdata)
+                          if (stype == DHCPV6_OPT_PREFIX_CLASS && slen == 2) 
+                            entry.prefix_class = ntohs(*((uint16_t*)sdata));
 
                        odhcp6c_update_entry(STATE_IA_PD, &entry);
                } else if (otype == DHCPV6_OPT_IA_ADDR) {