arm: Add a sentence about overlaping selectors in sortlist statement

(cherry picked from commit ebc61946b2d8f0c407eb64134768aba4669962ff)

diff --git a/doc/arm/Bv9ARM-book.xml b/doc/arm/Bv9ARM-book.xml
index e516383502e7403c0e7c3efb0a45d709a728dec3..33e06e60a17c81369ba2ea26887186ddce8b624b 100644 (file)
--- a/doc/arm/Bv9ARM-book.xml
+++ b/doc/arm/Bv9ARM-book.xml
@@ -8699,7 +8699,8 @@ avoid-v6-udp-ports { 40000; range 50000 60000; };
            The first element (which may be an IP address, an IP prefix, an
            ACL name or a nested <command>address_match_list</command>) of
            each top level list is checked against the source address of
-           the query until a match is found.
+           the query until a match is found. When the addresses in the
+           first element overlap, the first rule to match gets selected.
          </para>
          <para>
            Once the source address of the query has been matched, if the