1 files changed, 20 insertions, 7 deletions

diff --git a/net/ipv4/ipconfig.c b/net/ipv4/ipconfig.c
index 96400b0bd08a..b8f7763b2261 100644
--- a/net/ipv4/ipconfig.c
+++ b/net/ipv4/ipconfig.c
@@ -1403,6 +1403,9 @@ static int __init ic_proto_name(char *name)
         if (!strcmp(name, "on") || !strcmp(name, "any")) {
                 return 1;
         }
+        if (!strcmp(name, "off") || !strcmp(name, "none")) {
+                return 0;
+        }
 #ifdef CONFIG_IP_PNP_DHCP
         else if (!strcmp(name, "dhcp")) {
                 ic_proto_enabled &= ~IC_RARP;
@@ -1436,17 +1439,24 @@ static int __init ip_auto_config_setup(char *addrs)
         int num = 0;
 
         ic_set_manually = 1;
+        ic_enable = 1;
 
-        ic_enable = (*addrs &&
-                (strcmp(addrs, "off") != 0) &&
-                (strcmp(addrs, "none") != 0));
-        if (!ic_enable)
+        /*
+         * If any dhcp, bootp etc options are set, leave autoconfig on
+         * and skip the below static IP processing.
+         */
+        if (ic_proto_name(addrs))
                 return 1;
 
-        if (ic_proto_name(addrs))
+        /* If no static IP is given, turn off autoconfig and bail.  */
+        if (*addrs == 0 ||
+            strcmp(addrs, "off") == 0 ||
+            strcmp(addrs, "none") == 0) {
+                ic_enable = 0;
                 return 1;
+        }
 
-        /* Parse the whole string */
+        /* Parse string for static IP assignment.  */
         ip = addrs;
         while (ip && *ip) {
                 if ((cp = strchr(ip, ':')))
@@ -1484,7 +1494,10 @@ static int __init ip_auto_config_setup(char *addrs)
                                 strlcpy(user_dev_name, ip, sizeof(user_dev_name));
                                 break;
                         case 6:
-                                ic_proto_name(ip);
+                                if (ic_proto_name(ip) == 0 &&
+                                    ic_myaddr == NONE) {
+                                        ic_enable = 0;
+                                }
                                 break;
                         }
                 }