exclude reserved IPs with if_up

git-svn-id: https://conky.svn.sourceforge.net/svnroot/conky/trunk/conky1@1113 7f574dfc-610e-0410-a909-a81674777703

diff --git a/src/linux.c b/src/linux.c
index 6aea4c9..fc4bffc 100644 (file)
--- a/src/linux.c
+++ b/src/linux.c
@@ -253,10 +253,13 @@ int interface_up(const char *dev)
                        /* get associated address on device */
                        addr = ((struct ifreq *) conf.ifc_buf)[k].ifr_ifru.ifru_addr;
                        /* if ip is 0.0.0.0 it is not up */
-                       if((addr.sa_data[2] & 255) == 0 &&
-                                       (addr.sa_data[3] & 255) == 0 &&
-                                       (addr.sa_data[4] & 255) == 0 &&
-                                       (addr.sa_data[5] & 255) == 0) {
+                       if(((addr.sa_data[2] & 255) == 0 && (addr.sa_data[3] & 255) == 0 &&
+                           (addr.sa_data[4] & 255) == 0 && (addr.sa_data[5] & 255) == 0) || 
+                           /* oh yeah also include IANA link local RFC3330
+                           * http://www.faqs.org/rfcs/rfc3330.html
+                            * http://www.iana.org/assignments/ipv4-address-space Notes [6]
+                            * exclude 169.254.*.*  how about 223.255 and 240.0??? */
+                          ((addr.sa_data[2] & 255) == 169 && (addr.sa_data[3] & 255) == 254)) {
                                break;
                        }
                        /* otherwise we are good */