> note that in NetBSD, pipe() is really a frontend for socketpair(), so
> the fd's you get back from pipe are really sockets.  this is why the
> getpeername() is able to succeed.  (FWIW, the sockaddr_in.sin_addr
> for these results is 0.)

It is better to use sockaddr_un.sun_path rather than sockaddr_in.sin_addr,
because the address family (sockaddr.sa_family) which is returned from 
getpeername(2) is AF_UNIX (a.k.a. AF_LOCAL) rather than AF_INET.

Also it is better to use "struct sockaddr_storage" for getpeername(2)
storage.
--
soda