Revert "Not accepting default routes retracted"

This reverts commit e98e76e.

Revert "Uninstalling default unreachable routes"

This reverts commit 149a20e.

Revert "Ignore only Add unreachable routes"

This reverts commit 9add398.

Author: Dando-Real-ITA

kernel_netlink.c

@@ -1046,7 +1046,7 @@ kernel_route(int operation, int table,
 
     /* Unreachable default routes cause all sort of weird interactions;
        ignore them. */
-    if(operation == ROUTE_ADD && metric >= KERNEL_INFINITY && (plen == 0 || (ipv4 && plen == 96)))
+    if(metric >= KERNEL_INFINITY && (plen == 0 || (ipv4 && plen == 96)))
         return 0;
 
     memset(&buf, 0, sizeof(buf));

route.c

@@ -731,8 +731,6 @@ route_acceptable(struct babel_route *route, int feasible,
         return 0;
     if(exclude && route->neigh == exclude)
         return 0;
-    if(route->refmetric == INFINITY && is_default(route->src->prefix, route->src->plen))
-        return 0;
     return 1;
 }
 
@@ -931,11 +929,6 @@ update_route(const unsigned char *id,
             }
         }
 
-        if(route->installed && refmetric == INFINITY && is_default(prefix, plen)) {
-            uninstall_route(route);
-            lost = 1;
-        }
-
         route->src = retain_source(src);
         if(refmetric < INFINITY)
             route->time = now.tv_sec;