X-Git-Url: https://git.decadent.org.uk/gitweb/?a=blobdiff_plain;f=src%2Fdhcpv6.c;h=a3e0a18e50ec1644b07110e371ac52bd6283ce27;hb=4a169b02b003fe50b2bccdf6b8c78a4de245669f;hp=425aee1987d5ae6c19c20eb13a3d64e372036fbf;hpb=ce8b29ad74913c830cda1c7c537a665e41c7928b;p=odhcp6c.git

diff --git a/src/dhcpv6.c b/src/dhcpv6.c
index 425aee1..a3e0a18 100644
--- a/src/dhcpv6.c
+++ b/src/dhcpv6.c
@@ -272,17 +272,21 @@ static void dhcpv6_send(enum dhcpv6_msg type, uint8_t trid[3], uint32_t ecs)
 		for (size_t i = 0; i < n_prefixes; i++) {
 			struct dhcpv6_ia_hdr hdr_ia_pd = {
 				htons(DHCPV6_OPT_IA_PD),
-				htons(sizeof(hdr_ia_pd) - 4 + sizeof(struct dhcpv6_ia_prefix)),
+				htons(sizeof(hdr_ia_pd) - 4 +
+				      sizeof(struct dhcpv6_ia_prefix) * !!request_prefixes[i].length),
 				request_prefixes[i].iaid, 0, 0
 			};
 			struct dhcpv6_ia_prefix pref = {
 				.type = htons(DHCPV6_OPT_IA_PREFIX),
-				.len = htons(25), .prefix = request_prefixes[i].length
+				.len = htons(sizeof(pref) - 4),
+				.prefix = request_prefixes[i].length
 			};
 			memcpy(ia_pd + ia_pd_len, &hdr_ia_pd, sizeof(hdr_ia_pd));
 			ia_pd_len += sizeof(hdr_ia_pd);
-			memcpy(ia_pd + ia_pd_len, &pref, sizeof(pref));
-			ia_pd_len += sizeof(pref);
+			if (request_prefixes[i].length) {
+				memcpy(ia_pd + ia_pd_len, &pref, sizeof(pref));
+				ia_pd_len += sizeof(pref);
+			}
 		}
 	} else {
 		struct odhcp6c_entry *e = odhcp6c_get_state(STATE_IA_PD, &ia_pd_entries);
@@ -948,6 +952,7 @@ static int dhcpv6_handle_reply(enum dhcpv6_msg orig, _unused const int rc,
 		odhcp6c_clear_state(STATE_S46_MAPE);
 		odhcp6c_clear_state(STATE_S46_LW);
 		odhcp6c_clear_state(STATE_PASSTHRU);
+		odhcp6c_clear_state(STATE_CUSTOM_OPTS);
 
 		// Parse and find all matching IAs
 		dhcpv6_for_each_option(opt, end, otype, olen, odata) {