diff options
Diffstat (limited to 'src/resolve')
| -rw-r--r-- | src/resolve/resolved-dns-packet.c | 6 | ||||
| -rw-r--r-- | src/resolve/resolved-dns-packet.h | 2 |
2 files changed, 4 insertions, 4 deletions
diff --git a/src/resolve/resolved-dns-packet.c b/src/resolve/resolved-dns-packet.c index e626740..e446461 100644 --- a/src/resolve/resolved-dns-packet.c +++ b/src/resolve/resolved-dns-packet.c @@ -1804,9 +1804,9 @@ int dns_packet_read_rr( if (r < 0) return r; - /* RFC 2181, Section 8, suggests to - * treat a TTL with the MSB set as a zero TTL. */ - if (rr->ttl & UINT32_C(0x80000000)) + /* RFC 2181, Section 8, suggests to treat a TTL with the MSB set as a zero TTL. We avoid doing this + * for OPT records so that all 8 bits of the extended RCODE may be used .*/ + if (key->type != DNS_TYPE_OPT && rr->ttl & UINT32_C(0x80000000)) rr->ttl = 0; r = dns_packet_read_uint16(p, &rdlength, NULL); diff --git a/src/resolve/resolved-dns-packet.h b/src/resolve/resolved-dns-packet.h index 393b7b2..1b649af 100644 --- a/src/resolve/resolved-dns-packet.h +++ b/src/resolve/resolved-dns-packet.h @@ -117,7 +117,7 @@ static inline uint16_t DNS_PACKET_RCODE(DnsPacket *p) { uint16_t rcode; if (p->opt) - rcode = (uint16_t) (p->opt->ttl >> 24); + rcode = (uint16_t) ((p->opt->ttl >> 20) & 0xFF0); else rcode = 0; |