route: Don't log error when adding a route which already exists

Add a comment to explain why.

diff --git a/src/route.c b/src/route.c
index 01bf8df9dfaa6c094bb716f95601e6d66f2ea27b..a9d971024d0afb4d9f26643ace83b68d7d555812 100644 (file)
--- a/src/route.c
+++ b/src/route.c
@@ -594,7 +594,9 @@ rt_add(rb_tree_t *kroutes, struct rt *nrt, struct rt *ort)
        }
 #endif
 
-       if (if_route(RTM_ADD, nrt) != -1) {
+       /* Shouldn't need to check for EEXIST, but some kernels don't
+        * dump the subnet route just after we added the address. */
+       if (if_route(RTM_ADD, nrt) != -1 || errno == EEXIST) {
                result = true;
                goto out;
        }