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-rw-r--r--avahi-core/domain-util.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/avahi-core/domain-util.c b/avahi-core/domain-util.c
index 627ce5d..f4bcdc0 100644
--- a/avahi-core/domain-util.c
+++ b/avahi-core/domain-util.c
@@ -281,7 +281,7 @@ uint16_t avahi_keytag(AvahiRecord r){
/* finally, generate keytag */
/* first arg is rdata address, second arg is rdlength */
- result = keytag(AVAHI_DNS_PACKET_DATA(tmp), sizeof(uint16_t) + 2*sizeof(uint8_t) + AVAHI_DNSSEC_SHA1_KEYLENGTH);
+ result = keytag(AVAHI_DNS_PACKET_DATA(tmp) + AVAHI_DNS_PACKET_HEADER_SIZE, tmp->size - AVAHI_DNS_PACKET_HEADER_SIZE);
avahi_free(tmp);