Owa_sec package

Question

Can anybody please help on these:
1. When I run owa_sec.get_client_ip in the sql developer, it returns me null. Any idea why?
2. How is owa_sec.get_client_ip different from owa_util.get_cgi_env('REMOTE_ADDR')?
3. I want to get the ipaddress of my machine(like ipaddress I get when I check ip configuraion on the command line) and owa_util.get_cgi_env('REMOTE_ADDR') doesn't give me the right one? It gives some other number of the same series as is mine.
Thanks,

Answer 1

Thanks everybody for the reply.
This is what I know so far:
I am using windows2007 and Oracle 11g.
select owa_util.get_cgi_env('REMOTE_ADDR') from dual
--111.200.14.46
select sys_context('userenv','ip_address') from dual;
--111.200.13.1
--and when I run ipconfig on the command line
--111.200.132.59(this is what I want to achieve)
Purpose is to is get ipaddress of the person who runs an application in apex.
and following javascript(run on http://javascript.internet.com/user-details/ip-address.html) also give ip address that I want: 111.200.132.59
'<!--#echo var="REMOTE_ADDR"-->'
but when I put in the html header of the apex application, it doesn't return any ip address
I didn't put it in apex forum thinking that I can probably get sql query to get desired results.
Thanks,