Thanks for your information.
Problem is that we are using IPv4 in all unix servers in our environment. Will there be any problem if I use IPv6 alongwith IPv4 on Sun box. We already configured the box on IPv4 and we just want to bring down IPv6.
See below
lo0: flags=1000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4> mtu 8232 index 1
inet 127.0.0.1 netmask ff000000
hme0: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 2
inet 142.xxx.xxx.xxx netmask fffffc00 broadcast 142.xxx.xxx.xxx
ether 8:0:20:ea:3f:0
lo0: flags=2000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv6> mtu 8252 index 1
inet6 ::1/128
hme0: flags=2000841<UP,RUNNING,MULTICAST,IPv6> mtu 1500 index 2
ether 8:0:20:ea:3f:0
inet6 fe80::a00:20ff:feea:3f00/10