Add known issue

Change-Id: Ia8a90193f5ed57d922810572cce7c3645f4c06b9
diff --git a/release/1.1.0.rst b/release/1.1.0.rst
index 3dd27c1..8e7b673 100644
--- a/release/1.1.0.rst
+++ b/release/1.1.0.rst
@@ -48,7 +48,8 @@
   As before, more than one slice can be created when using BESS-UPF.
 - **Initial INT integration**:
   this release adds di-metrics-exporter,
-  a new service which fetches and aggregates real-time INT-based metrics and anomalies from Intel\ |reg| DeepInsight,
+  a new service which fetches and aggregates real-time INT-based metrics and anomalies
+  from Intel\ |reg| DeepInsight |tm|,
   to produce per-UE health status reports to be consumed by the Aether Analytics Engine (work-in-progress).
   SD-fabric supports monitoring of UE traffic when using both P4-UPF and BESS-UPF.
 
@@ -185,7 +186,13 @@
 - Some INT collectors might not support topologies with dual-homed hosts.
 - In P4-UPF, configuration of slice rate limits is currently not exposed to Aether.
   We plan to add this in the next minor release (SD-Fabric v1.1.1).
-- In BESS-UPF, when using application filtering with port ranges, we support only ranges up to 100 ports.
+- In P4-UPF, we currently don't support exporting per-port or per-flow metrics
+  via Prometheus. As a consequence, when using the Aether monitoring dashboard,
+  the corresponding graphs will not be populated. We plan to add this in the
+  next major release (SD-Fabric v1.2)
+- In BESS-UPF, when using application filtering with port ranges, we don't
+  support ranges wider than 100 ports. Please create more application filtering
+  rules to cover the desired range.
 
 Component Versions
 ------------------
@@ -237,7 +244,7 @@
 - Repo: `bf-di-scripts <https://github.com/opennetworkinglab/bf-di-scripts/blob/master/4/utility/>`_: ``fbc6999d4dc92d8f9909df1c9f2e7b66b0edbf2e``
 
 .. note::
-    DeepInsight is a 3rd party licensed software from Intel\ |reg|.
+    DeepInsight |tm| is a 3rd party licensed software from Intel\ |reg|.
     It is integrated with SD-Fabric but the image is not distributed as part of the SD-Fabric open source release.
 
 Helm Chart Versions
@@ -255,3 +262,4 @@
 - `bess-upf chart <https://gerrit.opencord.org/plugins/gitiles/sdfabric-helm-charts/+/refs/heads/master/bess-upf>`_: ``0.0.4``
 
 .. |reg|    unicode:: U+000AE .. REGISTERED SIGN
+.. |tm|     unicode:: U+2122 .. TRADE MARK SIGN