doc: Add release notes

hebasto · hebasto · commit a191e23b8e7f · 2021-01-07T18:07:11.000+02:00
diff --git a/doc/release-notes-18077.md b/doc/release-notes-18077.md
@@ -0,0 +1,10 @@
+P2P and network changes
+-----------------------
+
+- Added NAT-PMP port mapping support via [`libnatpmp`](https://miniupnp.tuxfamily.org/libnatpmp.html)
+
+Command-line options
+--------------------
+
+- The `-natpmp` option has been added to use NAT-PMP to map the listening port. If both UPnP
+and NAT-PMP are enabled, a successful allocation from UPnP prevails over one from NAT-PMP.
