add a debug message showing interface availability changes

diff --git a/interface.c b/interface.c
index 73da2ab..62617e2 100644 (file)
--- a/interface.c
+++ b/interface.c
@@ -157,6 +157,7 @@ interface_set_available(struct interface *iface, bool new_state)
        if (iface->available == new_state)
                return;
 
+       D(INTERFACE, "Interface '%s', available=%d\n", iface->name, new_state);
        iface->available = new_state;
 
        if (new_state) {