Tweak debug logging of non-specific routes.

babeld.c

@@ -1074,10 +1074,12 @@ dump_route(FILE *out, struct babel_route *route)
         snprintf(channels + j, 100 - j, ")");
     }
 
-    fprintf(out, "%s from %s metric %d (%d) refmetric %d id %s "
+    fprintf(out, "%s%s%s metric %d (%d) refmetric %d id %s "
             "seqno %d%s age %d via %s neigh %s%s%s%s\n",
             format_prefix(route->src->prefix, route->src->plen),
-            format_prefix(route->src->src_prefix, route->src->src_plen),
+            route->src->src_plen > 0 ? " from " : "",
+            route->src->src_plen > 0 ?
+            format_prefix(route->src->src_prefix, route->src->src_plen) : "",
             route_metric(route), route_smoothed_metric(route), route->refmetric,
             format_eui64(route->src->id),
             (int)route->seqno,
@@ -1094,9 +1096,11 @@ dump_route(FILE *out, struct babel_route *route)
 static void
 dump_xroute(FILE *out, struct xroute *xroute)
 {
-    fprintf(out, "%s from %s metric %d (exported)\n",
+    fprintf(out, "%s%s%s metric %d (exported)\n",
             format_prefix(xroute->prefix, xroute->plen),
-            format_prefix(xroute->src_prefix, xroute->src_plen),
+            xroute->src_plen > 0 ? " from " : "",
+            xroute->src_plen > 0 ?
+            format_prefix(xroute->src_prefix, xroute->src_plen) : "",
             xroute->metric);
 }