do we need inet_ntop check?

Currently the IPv6 check in configure.in says this:

HAVE_IPV6=no
AC_CHECK_TYPE([struct sockaddr_in6],             [AC_CHECK_FUNC(inet_ntop,
[AC_DEFINE(HAVE_IPV6,1, [Define to 1 if 
 
you have support for IPv6.])                             HAVE_IPV6=yes])],             [],
[$ac_includes_default
#include <netinet/in.h>])
AC_SUBST(HAVE_IPV6)


However, we don't use inet_ntop anywhere in our code that I can see, 
either in the HEAD or REL8_0_STABLE branch. So why do we need that extra 
check (which fails on Windows)?

cheers

andrew