router: improve deprecation handling

diff --git a/src/router.c b/src/router.c
index d7452f5..1ae8d1a 100644 (file)
--- a/src/router.c
+++ b/src/router.c
@@ -314,6 +314,8 @@ static uint64_t send_router_advert(struct interface *iface, const struct in6_add
                p->nd_opt_pi_valid_time = htonl(TIME_LEFT(addr->valid, now));
                if (addr->preferred > (uint32_t)now)
                        p->nd_opt_pi_preferred_time = htonl(TIME_LEFT(addr->preferred, now));
+               else if (addr->valid - now < 7200)
+                       p->nd_opt_pi_valid_time = 0;
 
 
                if (TIME_LEFT(addr->preferred, now) > dns_time) {

diff --git a/src/router.h b/src/router.h
index 720490d..5b5f4d7 100644 (file)
--- a/src/router.h
+++ b/src/router.h
@@ -31,7 +31,7 @@ struct icmpv6_opt {
 
 
 #define MaxValidTime 65535
-#define MaxRtrAdvInterval (MaxValidTime / 3)
+#define MaxRtrAdvInterval 1800
 
 #define ND_RA_FLAG_PROXY       0x4
 #define ND_RA_PREF_HIGH        (1 << 3)