Add traceroute for mesh testing

src/freedombone-image-customise

     # dhcp daemon for hotspot on secondary wifi adapter
     chroot "$rootdir" apt-get -yq install dnsmasq
 
+    # for debugging
+    chroot "$rootdir" apt-get -yq install traceroute
+
     # set the default protocol to be used
     echo 'batman-adv' > $rootdir$MESH_DEFAULT_PROTOCOL
 
+    sed -i 's|#net.ipv6.conf.all.forwarding.*|net.ipv6.conf.all.forwarding=1|g' $rootdir/etc/sysctl.conf
+    sed -i 's|net.ipv6.conf.all.forwarding.*|net.ipv6.conf.all.forwarding=1|g' $rootdir/etc/sysctl.conf
+
+    sed -i 's|#net.ipv6.conf.all.accept_redirects.*|net.ipv6.conf.all.accept_redirects=1|g' $rootdir/etc/sysctl.conf
+    sed -i 's|net.ipv6.conf.all.accept_redirects.*|net.ipv6.conf.all.accept_redirects=1|g' $rootdir/etc/sysctl.conf
+
+    sed -i 's|#net.ipv6.conf.all.accept_source_route.*|net.ipv6.conf.all.accept_source_route=1|g' $rootdir/etc/sysctl.conf
+    sed -i 's|net.ipv6.conf.all.accept_source_route.*|net.ipv6.conf.all.accept_source_route=1|g' $rootdir/etc/sysctl.conf
+
     configure_firewall
     install_avahi
     install_batman

src/freedombone-mesh-bmx6

     # avahi on ipv6
     sed -i 's|use-ipv4=.*|use-ipv4=no|g' /etc/avahi/avahi-daemon.conf
     sed -i 's|use-ipv6=.*|use-ipv6=yes|g' /etc/avahi/avahi-daemon.conf
+    sed -i 's|#disallow-other-stacks=.*|disallow-other-stacks=no|g' /etc/avahi/avahi-daemon.conf
+    sed -i 's|disallow-other-stacks=.*|disallow-other-stacks=no|g' /etc/avahi/avahi-daemon.conf
+    sed -i 's|#publish-a-on-ipv6=.*|publish-a-on-ipv6=yes|g' /etc/avahi/avahi-daemon.conf
+    sed -i 's|publish-a-on-ipv6=.*|publish-a-on-ipv6=yes|g' /etc/avahi/avahi-daemon.conf
     systemctl restart avahi-daemon
 
     systemctl daemon-reload
     systemctl enable bmx6
-    systemctl start bmx6
 
     # NOTE: Don't connect the secondary wifi device. hostapd will handle that by itself
 
     sed -i "s|server_name .*|server_name ${HOSTNAME}.local;|g" /etc/nginx/sites-available/git_ssb
 
     systemctl restart nginx
+    systemctl restart bmx6
 
     verify
 
         start
         ;;
     ping)
-        ping -v -6 $2
+        ping6 -v $2
         ;;
     data)
         bmx6 -lc traffic=$IFACE

src/freedombone-mesh-bmx7

     # avahi on ipv6
     sed -i 's|use-ipv4=.*|use-ipv4=no|g' /etc/avahi/avahi-daemon.conf
     sed -i 's|use-ipv6=.*|use-ipv6=yes|g' /etc/avahi/avahi-daemon.conf
+    sed -i 's|#disallow-other-stacks=.*|disallow-other-stacks=no|g' /etc/avahi/avahi-daemon.conf
+    sed -i 's|disallow-other-stacks=.*|disallow-other-stacks=no|g' /etc/avahi/avahi-daemon.conf
+    sed -i 's|#publish-a-on-ipv6=.*|publish-a-on-ipv6=yes|g' /etc/avahi/avahi-daemon.conf
+    sed -i 's|publish-a-on-ipv6=.*|publish-a-on-ipv6=yes|g' /etc/avahi/avahi-daemon.conf
     systemctl restart avahi-daemon
 
     systemctl daemon-reload
     systemctl enable bmx7
-    systemctl start bmx7
 
     # NOTE: Don't connect the secondary wifi device. hostapd will handle that by itself
 
     sed -i "s|server_name .*|server_name ${HOSTNAME}.local;|g" /etc/nginx/sites-available/git_ssb
 
     systemctl restart nginx
+    systemctl restart bmx7
 
     verify
 
         start
         ;;
     ping)
-        ping -v -6 $2
+        ping6 -v $2
         ;;
     data)
         bmx7 -lc traffic=$IFACE