Add note about priority field

diff --git a/docs/markdown/authoritative/backend-remote.md b/docs/markdown/authoritative/backend-remote.md
index 64538d16435880dd1dd1dd6c8aa3f9dbb0ff0dc9..ad1c64d0bd40a7d79c1ddfdea851163aa6fa3e88 100644 (file)
--- a/docs/markdown/authoritative/backend-remote.md
+++ b/docs/markdown/authoritative/backend-remote.md
@@ -108,6 +108,7 @@ This method is used to do the basic query. You can omit auth, but if you are usi
 * Optional parameters: remote, local, real-remote
 * Reply: array of `qtype,qname,content,ttl,domain\_id,scopeMask,auth`
 * Optional values: domain\_id, scopeMask and auth
+* Note: priority field is required before 4.0, after 4.0 priority is added to content.
 
 #### Example JSON/RPC
 Query: