Block firefox telemetry on mesh

src/freedombone-utils-firewall

       echo "iptables -A INPUT -p tcp --dport $TRACKER_PORT -j ACCEPT";
       echo "ip6tables -A INPUT -p tcp --dport $TRACKER_PORT -j ACCEPT";
       echo "iptables -A INPUT -p udp --dport 1900 -j ACCEPT";
-      echo "ip6tables -A INPUT -p udp --dport 1900 -j ACCEPT"; } > "$MESH_FIREWALL_SCRIPT"
+      echo "ip6tables -A INPUT -p udp --dport 1900 -j ACCEPT";
+      echo "iptables -A INPUT -s $FIREFOX_TELEMETRY_IP -j DROP";
+      echo "iptables -A OUTPUT -s $FIREFOX_TELEMETRY_IP -j DROP"; } > "$MESH_FIREWALL_SCRIPT"
     chmod +x "$MESH_FIREWALL_SCRIPT"
 
     { echo '[Unit]';