I added user=root to install/etc/dnsmasq.conf and then deleted and recreated the docker image and it works for me now. Hope this helps.

Reference: https://github.com/nicolasff/docker-cassandra/issues/8

update-rc.d vpnserver defaults

add system image http://dl.ubnt.com/ER-e100-v1.2.0.build4574253.tar

http://community.ubnt.com/t5/EdgeMAX/Edgerouter-lite-firmware-upgrade-failed/td-p/634897

for i in /proc/sys/net/ipv4/conf/*/rp_filter ; do
echo 0 > $i
done

http://ricotroubleshooting.blogspot.hk/2014/01/how-to-route-only-specific-ports.html

rm -f /etc/udev/rules.d/70-persistent-net.rules

http://serverfault.com/questions/353839/ubuntu-network-driver-reset-to-eth0

http://www.vpnonline.pl/en/konfiguracja/mikrotik-pptp

http://wiki.hidemyass.com/Mikrotik_Router_PPTP_and_L2TP_Setup

ip firewall nat add chain=dstnat dst-address=69.69.69.69 protocol=tcp dst-port=5900 action=dst-nat to-addresses=192.168.1.101 to-ports=5900

http://wiki.mikrotik.com/wiki/Forwarding_a_port_to_an_internal_IP

http://www.howtoforge.com/automatically-unlock-luks-encrypted-drives-with-a-keyfile