X-Git-Url: http://git.archive.openwrt.org/?a=blobdiff_plain;f=src%2Fodhcpd.c;h=3c384e831cd5b76267e0981fb7b9b766ec9466d8;hb=d94b406eeba27af2a6abff333dc16e82d28ed636;hp=0edf63ef4a06fa08e6bb5b16771f0aeac6794d11;hpb=b461334ab277b6e8fd1622ab7c8a655363bd3f6c;p=project%2Fodhcpd.git

diff --git a/src/odhcpd.c b/src/odhcpd.c
index 0edf63e..3c384e8 100644
--- a/src/odhcpd.c
+++ b/src/odhcpd.c
@@ -263,6 +263,25 @@ ssize_t odhcpd_get_interface_addresses(int ifindex,
 	return ret;
 }
 
+int odhcpd_get_preferred_interface_address(int ifindex, struct in6_addr *addr)
+{
+	struct odhcpd_ipaddr ipaddrs[8];
+	ssize_t ip_cnt = odhcpd_get_interface_addresses(ifindex, ipaddrs, ARRAY_SIZE(ipaddrs));
+	uint32_t preferred = 0;
+	int ret = 0;
+
+	for (ssize_t i = 0; i < ip_cnt; i++) {
+		struct odhcpd_ipaddr *ipaddr = &ipaddrs[i];
+
+		if (ipaddr->preferred > preferred || !preferred) {
+			preferred = ipaddr->preferred;
+			*addr = ipaddr->addr;
+			ret = 1;
+		}
+	}
+
+	return ret;
+}
 
 struct interface* odhcpd_get_interface_by_index(int ifindex)
 {