dhcpv6-pd: ignore /64 on interface

[project/odhcpd.git] / src / dhcpv6-ia.c

diff --git a/src/dhcpv6-ia.c b/src/dhcpv6-ia.c
index 69fda07..a6ea66f 100644 (file)
--- a/src/dhcpv6-ia.c
+++ b/src/dhcpv6-ia.c
@@ -581,7 +581,8 @@ static void update(struct interface *iface)
        int minprefix = -1;
 
        for (int i = 0; i < len; ++i) {
-               if (addr[i].preferred > 0 && addr[i].prefix > minprefix)
+               if (addr[i].preferred > 0 && addr[i].prefix < 64 &&
+                               addr[i].prefix > minprefix)
                        minprefix = addr[i].prefix;
 
                addr[i].addr.s6_addr32[3] = 0;
@@ -756,7 +757,8 @@ static size_t append_reply(uint8_t *buf, size_t buflen, uint16_t status,
                                        size_t entrlen = sizeof(p) - 4;
 
                                        if (datalen + entrlen + 4 > buflen ||
-                                                       (a->assigned == 0 && a->managed_size == 0))
+                                                       (a->assigned == 0 && a->managed_size == 0) ||
+                                                       (!a->managed_size && a->length < p.preferred))
                                                continue;
 
                                        memcpy(buf + datalen, &p, sizeof(p));