Java Network problem

[mina mina]

hello ,
  i really dont know if i have to mail this to
freebsd-java or to sun

but i have jdk1.4.2 compiled on FreeBSD 5.1
and now am working on FreeBSD 5.2-RELEASE after
upgrade

its network problem i cannot nslookup ip using java
i have test this code on windows and its work fine
with the same JDK

InetAddress addr = InetAddress.getByName (IP); 
System.out.println ( "IP Address : " +
addr.getHostAddress ()) ; 
System.out.println ( "hostname   : " +
addr.getHostName () ); 

getting address (IP) of hostname is work fine 

but if i wana get the hostname for IP its gives me the
same IP

and my connection is Dailup

thanks alot
Mina

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