mysql not listening on 3306 port

[Chadwick Hung]

Pleas help. I can't connect my mysql remotely but only from console.
I checked skip-networking is off. MYSQLD is running my port 3306. I've flush the iptables by -F
and restarted the mysqld many times. Still the netstat shows me 3306 is still not being listening. (but I can see tcp6).
I also tried iptables -F to flush firewall and restart mysqld it's the same
Please kindly advise.

netstat -ntlp
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN 2873/master
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 1588/sshd
tcp6 0 0 ::1:25 :::* LISTEN 2873/master
tcp6 0 0 :::3306 :::* LISTEN 29817/mysqld
tcp6 0 0 :::22 :::* LISTEN 1588/sshd

netstat --ip -a
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address Foreign Address State
tcp 0 0 localhost:smtp 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:ssh 0.0.0.0:* LISTEN
tcp 0 0 80.134.52.113.stati:ssh tswc3022.netvigato:7185 ESTABLISHED
tcp 0 0 localhost:38376 localhost:mysql TIME_WAIT
tcp 0 0 80.134.52.113.stati:ssh 122.225.109:boosterware TIME_WAIT

ps -ef|grep mysql
mysql-dr 29817 29334 0 15:58 pts/0 00:00:01 /usr/local/mysql56/bin/mysqld --defaults-file=/etc/my.cnf --basedir=/usr/local/mysql56 --datadir=/var/lib/mysql-dr --plugin-dir=/usr/local/mysql56/lib/plugin --user=mysql-dr --log-error=/var/log/mysqld-dr.log --pid-file=/tmp/mysqld-dr.pid --socket=/var/lib/mysql-dr/mysql-dr.sock --port=3306


Thanks
Chadwick