Fix: loopback protection

diff --git a/l2tplac.c b/l2tplac.c
index 4c71d6c..f073ecc 100644 (file)
--- a/l2tplac.c
+++ b/l2tplac.c
@@ -227,6 +227,8 @@ void lac_save_rad_tag_tunnels(sessionidt s)
                        LOG(1, s, session[s].tunnel, "Error, Bad IP tunnel server endpoint \n");
                else if (strlen(ptunnelrlns[idtag].tunnel_assignment_id) <= 0)
                        LOG(1, s, session[s].tunnel, "Error, No tunnel_assignment_id \n");
+               else if (ptunnelrlns[idtag].tunnel_server_endpoint == ntohl(config->bind_address))
+                       LOG(0, s, session[s].tunnel, "Error, IP Remote LNS == IP local bind address (%s) !!!\n", fmtaddr(config->bind_address, 0));
                else
                {
                        for (idrlns = 1; idrlns < MAXRLNSTUNNEL; ++idrlns)