how to delete IPV6 address by ifconfig up/down

[prabin]

hi all,
I have faced one problem in ifconfig in linux.I used ifconfig command then after i want delete the IPV6 address permanetly by ifconfig up/down, how is it possible plz give me some suggestion...

For Example

fconfig eth0
eth0 Link encap:Ethernet HWaddr 00:133:3F:7F:37
inet addr:172.16.170.117 Bcast:172.16.170.255 Mask:255.255.255.0
inet6 addr: fe80::213:d3ff:fe3f:7f37/64 Scope:Link <- here
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:205560943 errors:0 dropped:0 overruns:0 frame:1
TX packets:742535676 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:515791587 (491.8 MiB) TX bytes:3168788086 (2.9 GiB)
Interrupt:193

When fe80::213:d3ff:fe3f:7f37/64 is deleted by ifconfig command
> ifconfig down
> ifconfig up
fe80::213:d3ff:fe3f:7f37/64 apportioned once again

So i want delete IPV6 address permanetly.....

[fossy]

You want to disable ipv6, right? I've crossed the bridge somehow but don't remember when or how. Google got me various links including Linux: How to disable the IPv6 protocol

Edit: also found a pdf on deleting.

HTH