From: Jeremy Harris <jgh146exb@wizmail.org>
Date: Tue, 26 Feb 2019 18:10:12 +0000 (+0000)
Subject: Docs: Add note on lsearch for IPv4-mapped IPv6 addresses
X-Git-Tag: exim-4.93-RC0~266
X-Git-Url: https://git.exim.org/exim.git/commitdiff_plain/52af443324?ds=inline

Docs: Add note on lsearch for IPv4-mapped IPv6 addresses
---

diff --git a/doc/doc-docbook/spec.xfpt b/doc/doc-docbook/spec.xfpt
index d8cf6e73c..834f210ce 100644
--- a/doc/doc-docbook/spec.xfpt
+++ b/doc/doc-docbook/spec.xfpt
@@ -6741,6 +6741,11 @@ lookup types support only literal keys.
 &*Warning 2*&: In a host list, you must always use &(net-iplsearch)& so that
 the implicit key is the host's IP address rather than its name (see section
 &<<SECThoslispatsikey>>&).
+
+.new
+&*Warning 3*&: Do not use an IPv4-mapped IPv6 address for a key; use the
+IPv4.  Such addresses being searched for are converted to IPv4.
+.wen
 .next
 .new
 .cindex lookup json