(usagi-users 03451) getaddrinfo() returns sockaddr_in6 but machine doesn't have IPv6 turned on

Hi: I'm running on a Linux kernel 2.4.21-9 EL.  This machine has
getaddrinfo() and I call it to get a loopback address. in the hints ai_flags
= 0, ai_protocol=0, ai_family=0.  meaning I'm expecting a loopback address.
The same is designed to run on whatever is available on the machine. 

I get two sockaddrs on return: a sockaddr_in6 and a sockaddr_in both of
which describe their respective loopbacks with port.  

Without modifying it, I turn the sockaddr_in6 around to a socket() call.
This gets an error -- Address family not supported by protocol.  Ok, I buy
that. 

But why does getaddrinfo() give me and sockaddr_in6 back?  IPv6 is not
turned on for the machine;  shouldn't getaddrinfo() only give me a
sockaddr_in?  

Thanks for any advice

Dave McLellan --Consulting Software Engineer - SPEA Engineering
EMC Corporation
228 South St. Mail Stop: 228 LL/AA-24
Hopkinton, MA 01748  USA
+1-508-249-1257 F: +1-508-497-8030  [email protected]