diff options
| -rw-r--r-- | src/dhcpv6-ia.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/src/dhcpv6-ia.c b/src/dhcpv6-ia.c index 69fda07..a6ea66f 100644 --- 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)); |