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From: Gregory Neil Shapiro <gshapiro@FreeBSD.org>
Date: Tue, 7 Jul 2015 03:03:18 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
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Subject: svn commit: r285232 - head
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Author: gshapiro
Date: Tue Jul  7 03:03:17 2015
New Revision: 285232
URL: https://svnweb.freebsd.org/changeset/base/285232

Log:
  Add warning about change of behavior for sendmail 8.15.2 under FreeBSD 11
  with regards to IPv6 address representation in configuration/maps/rulesets.

Modified:
  head/UPDATING

Modified: head/UPDATING
==============================================================================
--- head/UPDATING	Tue Jul  7 03:02:07 2015	(r285231)
+++ head/UPDATING	Tue Jul  7 03:03:17 2015	(r285232)
@@ -31,6 +31,20 @@ NOTE TO PEOPLE WHO THINK THAT FreeBSD 11
 	disable the most expensive debugging functionality run
 	"ln -s 'abort:false,junk:false' /etc/malloc.conf".)
 
+20150706:
+	sendmail has been updated to 8.15.2.  Starting with FreeBSD 11.0
+	and sendmail 8.15, sendmail uses uncompressed IPv6 addresses by
+	default, i.e., they will not contain "::".  For example, instead
+	of ::1, it will be 0:0:0:0:0:0:0:1.  This permits a zero subnet
+	to have a more specific match, such as different map entries for
+	IPv6:0:0 vs IPv6:0.  This change requires that configuration
+	data (including maps, files, classes, custom ruleset, etc.) must
+	use the same format, so make certain such configuration data is
+	upgrading.  As a very simple check search for patterns like
+	'IPv6:[0-9a-fA-F:]*::' and 'IPv6::'.  To return to the old
+	behavior, set the m4 option confUSE_COMPRESSED_IPV6_ADDRESSES or
+	the cf option UseCompressedIPv6Addresses.
+
 20150630:
 	The default kernel entropy-processing algorithm is now
 	Fortuna, replacing Yarrow.