diff --git a/src/rfc3315.c b/src/rfc3315.c
index f3929f2..9297d52 100644
--- a/src/rfc3315.c
+++ b/src/rfc3315.c
@@ -180,7 +180,7 @@ static int dhcp6_no_relay(int msg_type, struct in6_addr *link_address, struct dh
   char *client_hostname= NULL, *hostname = NULL;
   char *domain = NULL, *send_domain = NULL;
   struct dhcp_config *config = NULL;
-  struct dhcp_netid known_id, iface_id;
+  struct dhcp_netid known_id, iface_id, v6_id;
   int done_dns = 0, hostname_auth = 0, do_encap = 0;
   unsigned char *outmsgtypep;
   struct dhcp_opt *opt_cfg;
@@ -194,6 +194,11 @@ static int dhcp6_no_relay(int msg_type, struct in6_addr *link_address, struct dh
   iface_id.next = tags;
   tags = &iface_id; 
 
+  /* set tag "DHCPv6" */
+  v6_id.net = "DHCPv6";
+  v6_id.next = tags;
+  tags = &v6_id;
+
   /* copy over transaction-id, and save pointer to message type */
   outmsgtypep = put_opt6(inbuff, 4);
   start_opts = save_counter(-1);