How to clear IP address on AIX?

I have an en3 configured a network IP address on it using smitty tcpip. how can I clear the IP address?

You can use smitty tcpip on en3 to clear or
smitty chinet

or simplest way
# rmdev -dl en3
# cfgmgr

To clear ip for interface in aix:

# chdev -a netaddr=0.0.0.0 -a netmask=0.0.0.0 -l en3

This will allow you to check all network settings on your system

#!/bin/ksh 
#for i in `lsdev -Cc if |grep en |awk '{print $1}'`
for i in  0 1 2 3 4 5 6 7 8 9 ; do
     ifdev=`lsdev -C |grep ent${i} |nawk -F ent '{print $2}'|awk '{print $1}'`
     if  [[ ${i} = ${ifdev} ]] ; then 
          tput smso 
          echo "  en$i  ent$i   "
          tput rmso 
          lscfg  |grep ent${i} |nawk -F "        " '{print $1 "\t" $3 " " $4 }'
          netstat -v en$i |egrep -i "Device Type:|media|Number of adapters:|ETHERNET STATISTICS"
          lsattr -El en$i |egrep "netaddr       |mtu |Status"|nawk -F " " '{print $1 " " $2 }'|grep -v remmtu
     else 
          echo " No device existing for ent$i "
     fi
done

1)first you will goto smitty tcp/ip and remove network
2)goto /etc/hosts and remove the network if the netwok is not remove
3)#rmdev -dl en3
#cfgmgr -v