docs: import v2016.2.7 release notes

docs/index.rst

@@ -68,6 +68,7 @@ Several Freifunk communities in Germany use Gluon as the foundation of their Fre
 
    releases/v2017.1.1
    releases/v2017.1
+   releases/v2016.2.7
    releases/v2016.2.6
    releases/v2016.2.5
    releases/v2016.2.4

docs/releases/v2016.2.7.rst

+Gluon 2016.2.7
+==============
+
+This release only fixes a single regression introduced in Gluon v2016.2.6, and
+add support for building using Perl 5.26.
+
+Bugfixes
+~~~~~~~~
+
+* Improve sysupgrade error handling (`#1160 <https://github.com/freifunk-gluon/gluon/issues/1160>`_)
+
+  If for some reason processes don't react to SIGKILL (usually because of a kernel bug),
+  a node could hang forever in sysupgrade, requiring a power cycle. This has been
+  fixed, triggering a reboot instead.
+
+* Backport fixes to support building with Perl 5.26 or newer (`76753ed <https://github.com/freifunk-gluon/gluon/commit/76753ede0da78e24208f10675fa288247deec961>`_)
+
+Known Issues
+~~~~~~~~~~~~
+
+* Default TX power on many Ubiquiti devices is too high, correct offsets are unknown (`#94 <https://github.com/freifunk-gluon/gluon/issues/94>`_)
+
+  Reducing the TX power in the Advanced Settings is recommended.
+
+* The MAC address of the WAN interface is modified even when Mesh-on-WAN is disabled (`#496 <https://github.com/freifunk-gluon/gluon/issues/496>`_)
+
+  This may lead to issues in environments where a fixed MAC address is expected (like VMware when promicious mode is disallowed).
+
+* Inconsistent respondd API (`#522 <https://github.com/freifunk-gluon/gluon/issues/522>`_)
+
+  The current API is inconsistent and will be replaced eventually. The old API will still be supported for a while.