doc: Add upgrade note for ppp changes

diff --git a/doc/userguide/upgrade.rst b/doc/userguide/upgrade.rst
index eecd4ab4d314431694b89b289b9690568cdd311b..7fc0339bf76865e06be7a3be90c54eada45f2e3f 100644 (file)
--- a/doc/userguide/upgrade.rst
+++ b/doc/userguide/upgrade.rst
@@ -176,6 +176,9 @@ Major changes
   of a request/response in the respective direction. This means that earlier a
   content that matched just because it fell in the inspection chunk without wholly
   belonging to any one request/response may not match any longer.
+- Various expected PPP packet types will no longer be marked as Unsupported Protocol
+  when in a PPPOE packet.
+- Added Cisco Discovery Protocol Control Protocol as a valid PPP packet.
 
 Removals
 ~~~~~~~~