Reject address of 0.0.0.0, don't ACK it.

diff --git a/pppd/ipcp.c b/pppd/ipcp.c
index 310f869067ef2b3484e4106d52ff1e1a63d7dbee..abeae25b4d1cc5fde77b30228669406980ce8ada 100644 (file)
--- a/pppd/ipcp.c
+++ b/pppd/ipcp.c
@@ -18,7 +18,7 @@
  */
 
 #ifndef lint
-static char rcsid[] = "$Id: ipcp.c,v 1.15 1995/04/24 05:58:38 paulus Exp $";
+static char rcsid[] = "$Id: ipcp.c,v 1.16 1995/04/26 06:46:50 paulus Exp $";
 #endif
 
 /*
@@ -778,6 +778,12 @@ ipcp_reqci(f, inp, len, reject_if_disagree)
                    tl = ntohl(wo->hisaddr);
                    PUTLONG(tl, p);
                }
+           } else if (ciaddr1 == 0 && wo->hisaddr == 0) {
+               /*
+                * If neither we nor he knows his address, reject the option.
+                */
+               orc = CONFREJ;
+               break;
            }
 
            /*
@@ -832,6 +838,12 @@ ipcp_reqci(f, inp, len, reject_if_disagree)
                    tl = ntohl(wo->hisaddr);
                    PUTLONG(tl, p);
                }
+           } else if (ciaddr1 == 0 && wo->hisaddr == 0) {
+               /*
+                * Don't ACK an address of 0.0.0.0 - reject it instead.
+                */
+               orc = CONFREJ;
+               break;
            }
        
            ho->neg_addr = 1;