try to fix unbound

Signed-off-by: Christian Richter <crichter@owncloud.com>

unbound/config.conf

@@ -0,0 +1,48 @@
+server:
+  access-control: 0.0.0.0/0 allow
+  interface: 0.0.0.0
+  port: 5335
+  do-ip6: no
+  do-ip4: yes
+  do-udp: yes
+  do-tcp: yes
+  # Set number of threads to use
+  num-threads: 8
+  # Hide DNS Server info
+  hide-identity: yes
+  hide-version: yes
+  # Limit DNS Fraud and use DNSSEC
+  harden-glue: yes
+  harden-dnssec-stripped: yes
+  harden-referral-path: yes
+  use-caps-for-id: yes
+  harden-algo-downgrade: yes
+  qname-minimisation: yes
+  aggressive-nsec: yes
+  rrset-roundrobin: yes
+  # Minimum lifetime of cache entries in seconds
+  cache-min-ttl: 300
+  # Configure TTL of Cache
+  cache-max-ttl: 14400
+  # Optimizations
+  msg-cache-slabs: 8
+  rrset-cache-slabs: 8
+  infra-cache-slabs: 8
+  key-cache-slabs: 8
+  serve-expired: yes
+  serve-expired-ttl: 3600
+  edns-buffer-size: 1232
+  prefetch: yes
+  prefetch-key: yes
+  unwanted-reply-threshold: 10000000
+  # Set cache size
+  rrset-cache-size: 256m
+  msg-cache-size: 128m
+  # increase buffer size so that no messages are lost in traffic spikes
+  #so-rcvbuf: 1m
+  private-address: 192.168.0.0/16
+  private-address: 169.254.0.0/16
+  private-address: 172.16.0.0/12
+  private-address: 10.0.0.0/8
+  private-address: fd00::/8
+  private-address: fe80::/10