interface-ip: set prefix indicator flag when IPv6 prefix lifetime changes

Trigger interface update event when IPv6 prefix lifetime changes by setting
the prefix indicator flag to inform external subsystems (eg hnetd) about IPv6
prefix lifetime changes.

Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>

diff --git a/interface-ip.c b/interface-ip.c
index ddca5d2e8dfc27564f8486d9908e2fcf934c89e9..dd4e01c15b62757ebc0ca4411223a1b182173f89 100644 (file)
--- a/interface-ip.c
+++ b/interface-ip.c
@@ -1047,6 +1047,10 @@ interface_update_prefix(struct vlist_tree *tree,
                list_for_each_entry(c, &prefix_new->assignments, head)
                        if ((iface = vlist_find(&interfaces, c->name, iface, node)))
                                interface_set_prefix_address(c, prefix_new, iface, true);
+
+               if (prefix_new->preferred_until != prefix_old->preferred_until ||
+                               prefix_new->valid_until != prefix_old->valid_until)
+                       ip->iface->updated |= IUF_PREFIX;
        } else if (node_new) {
                // Set null-route to avoid routing loops
                system_add_route(NULL, &route);