update CHANGES and docs about empty interface IDs

also clarify format of interface IDs.
nsupdate-info · Apr 25, 2015 · 2922cbc · 2922cbc
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diff --git a/CHANGES.rst b/CHANGES.rst
@@ -8,6 +8,22 @@ migrations for that version). For upgrading and migration help, please see
 the docs that match the version you are upgrading to.
 
 
+Release <TBD> (unreleased yet)
+------------------------------
+
+New Features:
+
+* Related Hosts: leave v4 or v6 interface ID empty to not create a DNS record
+
+Fixes:
+
+* ...
+
+Other changes:
+
+* ...
+
+
 Release 0.11.0
 --------------
 

diff --git a/docs/user.rst b/docs/user.rst
@@ -185,7 +185,12 @@ You also see it prepends the related host's name to your mainhost's FQDN.
 For the related hosts's address, p is same prefix as above (the host is on same
 network), but r comes from what you entered as interface ID into the related
 host record.
-The interface ID must be a proper suffix notation. A proper suffix notation starts with `::`
+
+The interface ID must be a proper notation.
+For IPv6 a interface ID might look like `::rrrr:rrrr:rrrr:rrrr`,
+for IPv4 a interface ID might look like `r.r.r.r`.
+
+If you leave the interface ID field empty, that means not to create such a DNS record.
 
 In other words: