--- configure.in.orig	Mon Jan  9 17:21:24 2006
+++ configure.in	Tue May  9 17:04:30 2006
@@ -57,6 +57,17 @@
 AC_STRUCT_TM
 AC_TYPE_UID_T
 
+dnl Check for post-Reno style struct sockaddr
+AC_CACHE_CHECK([for sa_len],
+  ac_cv_sa_len,
+[AC_TRY_COMPILE([#include <sys/types.h>
+#include <sys/socket.h>], [int main(void) {
+ struct sockaddr t;t.sa_len = 0;}],
+  ac_cv_sa_len=yes,ac_cv_sa_len=no)])
+if test $ac_cv_sa_len = yes; then
+  AC_DEFINE(HAVE_SA_LEN)
+fi
+
 dnl Checks for library functions.
 AC_PROG_GCC_TRADITIONAL
 AC_FUNC_MEMCMP