Set DHCPv6 message type when returning "use multicast".
diff --git a/src/rfc3315.c b/src/rfc3315.c
index 9826003..3728c29 100644
--- a/src/rfc3315.c
+++ b/src/rfc3315.c
@@ -328,6 +328,7 @@
       (msg_type == DHCP6REQUEST || msg_type == DHCP6RENEW || msg_type == DHCP6RELEASE || msg_type == DHCP6DECLINE))
     
     {  
+      *outmsgtypep = DHCP6REPLY;
       o1 = new_opt6(OPTION6_STATUS_CODE);
       put_opt6_short(DHCP6USEMULTI);
       put_opt6_string("Use multicast");