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diff --git a/lib/snmp/doc/src/notes.xml b/lib/snmp/doc/src/notes.xml
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@@ -34,6 +34,86 @@
<section>
+ <title>SNMP Development Toolkit 4.24.1</title>
+ <p>Version 4.24.1 supports code replacement in runtime from/to
+ version 4.24, 4.23.1 and 4.23. </p>
+
+ <section>
+ <title>Improvements and new features</title>
+ <p>-</p>
+
+<!--
+ <list type="bulleted">
+ <item>
+ <p>[agent,manager] Updated to support the new crypto interface. </p>
+ <p>Own Id: OTP-11009</p>
+ </item>
+
+ </list>
+-->
+
+ </section>
+
+ <section>
+ <title>Fixed Bugs and Malfunctions</title>
+<!--
+ <p>-</p>
+-->
+
+ <list type="bulleted">
+ <item>
+ <p>[agent] Reading the value of the vacmViewTreeFamilyMask returns
+ it in the wrong (internal bitlist) format. </p>
+ <p>The vacmViewTreeFamilyMask is defined as a bit string in the MIB
+ (OCTET STRING). Internally a bitlist (list of 1's and 0's,
+ see <seealso marker="snmp_agent_config_files#vacm">vacm config file</seealso>
+ for more info) is used.
+ However, the MIB implementation assumed the latter, effectively
+ rendering all attempts to read/set masks via SNMP unsuccessful. </p>
+ <p>Since the mask is used in hot paths (e.g. access permission checks
+ for each SNMP operation, the bitlist representation of the mask has
+ benefits (e.g. faster processing). Reading/writing the view mask
+ objects is less time-critical. Therefore, to fix the issue, convert
+ between the bitlist (internal) representation and bitstring
+ (external) when the vacmViewTreeFamilyMask objects are accessed. </p>
+ <p>Also, the check of the vacm config file was invalid with
+ regard to the mask value. It was assumed to be a proper oid, which
+ is not strictly the case (see bitlist above). </p>
+ <p>Own Id: OTP-11177</p>
+ <p>Stefan Zegenhagen</p>
+ </item>
+
+ <item>
+ <p>[agent] The counter increment function in the local-db was
+ incorrect. It did not handle counter wrap correctly. </p>
+ <p>Own Id: OTP-11192</p>
+ </item>
+
+ </list>
+
+ </section>
+
+ <section>
+ <title>Incompatibilities</title>
+ <p>-</p>
+
+<!--
+ <list type="bulleted">
+ <item>
+ <p>[manager] The old Addr-and-Port based API functions, previously
+ long deprecated and marked for deletion in R16B, has now been
+ removed. </p>
+ <p>Own Id: OTP-10027</p>
+ </item>
+
+ </list>
+-->
+ </section>
+
+ </section> <!-- 4.24.1 -->
+
+
+ <section>
<title>SNMP Development Toolkit 4.24</title>
<p>Version 4.24 supports code replacement in runtime from/to
version 4.23.1 and 4.23. </p>