addr.preferred_until = now;
if (!addr.valid_until || addr.valid_until - now > 7200)
addr.valid_until = now + 7200;
+ system_del_address(l3_downlink, &addr); // Work around dangling prefix routes
system_add_address(l3_downlink, &addr);
if (prefix->iface) {
if (prefix->iface->ip6table)