bool always_rewrite_dns;
bool ra_not_onlink;
bool ra_advrouter;
bool always_rewrite_dns;
bool ra_not_onlink;
bool ra_advrouter;
int learn_routes;
int default_router;
int managed;
int route_preference;
int ra_maxinterval;
int learn_routes;
int default_router;
int managed;
int route_preference;
int ra_maxinterval;
int ra_lifetime;
// DHCPv4
int ra_lifetime;
// DHCPv4