From d06529686f89074fd4fa574ac6012f8a873e7857 Mon Sep 17 00:00:00 2001
From: Laurent Bercot <ska-skaware@skarnet.org>
Date: Fri, 17 Nov 2023 20:23:56 +0000
Subject:  Prepare for 2.3.7.0; ignore link-local addresses in /etc/hosts

Signed-off-by: Laurent Bercot <ska@appnovation.com>
---
 doc/s6-dns-hosts-compile.html | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'doc/s6-dns-hosts-compile.html')

diff --git a/doc/s6-dns-hosts-compile.html b/doc/s6-dns-hosts-compile.html
index 537c025..2fecdc1 100644
--- a/doc/s6-dns-hosts-compile.html
+++ b/doc/s6-dns-hosts-compile.html
@@ -70,6 +70,11 @@ than <tt>/etc/hosts.cdb</tt>, they will not use <tt>/etc/hosts.cdb</tt> and will
 perform the compilation step into a temporary file. So, remember to run
 s6-dns-hosts-compile after modifying your <tt>/etc/hosts</tt> if you want to keep
 the tiny performance improvement. </li>
+ <li> Some tools write link-local addresses in <tt>/etc/hosts</tt> i.e. IPv6 addresses
+followed by a <tt>%</tt> (percent) and a network interface name. This is nonstandard
+and unusable with the DNS protocol, which does not take interface names into
+account. <tt>s6-dns-hosts-compile</tt> will ignore such lines if they appear in
+your hosts file. </li>
 </ul>
 
 </body>
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