Update unbound

Author: jedisct1

Dockerfile

@@ -14,7 +14,7 @@ RUN apt-get update && apt-get -qy dist-upgrade && apt-get -qy clean && \
 RUN update-ca-certificates 2> /dev/null || true
 
 ENV UNBOUND_GIT_URL https://github.com/NLnetLabs/unbound.git
-ENV UNBOUND_GIT_REVISION 74e06cc4b3fbe3dcea08eb93fcfca8f4359a9fb5
+ENV UNBOUND_GIT_REVISION ff6b527184b33ffe1e2b643db8a32fae8061fc5a
 
 WORKDIR /tmp