1 files changed, 3 insertions, 0 deletions
diff --git a/CHANGES b/CHANGES
index b25d83d..4d96f03 100644
--- a/CHANGES
+++ b/CHANGES
@@ -77,6 +77,9 @@ Revision 4.2.6rc2
   across reboots.
 - Make config.delTransport() returning detached transport object. Asyncio
   examples now use this facility to explicitly shutdown transport object.
+- Parts of SMIv1 remnant MIBs (RFC1213-MIB, RFC1158-MIB) added to provide 
+  complete compatibility with SMIv1. Symbols defined in these MIBs only
+  present in SMIv1 so they can't be substituted with their SMIv2 analogues.
 - Fix to authoritative engine side snmpEngineID discovery procedure: 
   respond with notInTimeWindows rather then with unsupportedSecurityLevel
   at time synchronization phase.