addr.valid_until = assignment->prefix->valid_until;
if (!add) {
- if (assignment->enabled)
- system_del_address(l3_downlink, &addr);
+ if (assignment->enabled) {
+ time_t now = system_get_rtime();
+ addr.preferred_until = now;
+ if (addr.valid_until - now > 7200)
+ addr.valid_until = now + 7200;
+ system_add_address(l3_downlink, &addr);
+ }
} else {
system_add_address(l3_downlink, &addr);