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-rw-r--r--src/resolve/dns-type.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/resolve/dns-type.h b/src/resolve/dns-type.h
index d025544bab..ea51dfdb65 100644
--- a/src/resolve/dns-type.h
+++ b/src/resolve/dns-type.h
@@ -154,3 +154,6 @@ const char *tlsa_selector_to_string(uint8_t selector);
/* https://tools.ietf.org/html/draft-ietf-dane-protocol-23#section-7.4 */
const char *tlsa_matching_type_to_string(uint8_t selector);
+
+/* https://tools.ietf.org/html/rfc6844#section-5.1 */
+#define CAA_FLAG_CRITICAL (1u << 7)