diff --git a/configure.in b/configure.in
index 63d3976aa3c..cf75aaa38f3 100644
--- a/configure.in
+++ b/configure.in
@@ -838,6 +838,8 @@ AC_CHECK_FUNC(p2open, , AC_CHECK_LIB(gen, p2open))
 AC_CHECK_FUNC(bind, , AC_CHECK_LIB(bind, bind))
 # Check if crypt() exists in libc or libcrypt, sets LIBS if needed
 AC_SEARCH_LIBS(crypt, crypt, AC_DEFINE(HAVE_CRYPT, 1, [crypt]))
+# See if we need a library for address lookup.
+AC_SEARCH_LIBS(inet_aton, [socket nsl resolv])
 
 # For the sched_yield() function on Solaris
 AC_CHECK_FUNC(sched_yield, , AC_CHECK_LIB(posix4, sched_yield))
diff --git a/extra/resolveip.c b/extra/resolveip.c
index 1061cafe380..c613f6a8cb6 100644
--- a/extra/resolveip.c
+++ b/extra/resolveip.c
@@ -116,11 +116,13 @@ int main(int argc, char **argv)
 
   while (argc--)
   {
+    struct in_addr addr;
     ip = *argv++;    
 
-    if (my_isdigit(&my_charset_latin1,ip[0]))
+    /* Not compatible with IPv6!  Probably should use getnameinfo(). */
+    if (inet_aton(ip, &addr) != 0)
     {
-      taddr = inet_addr(ip);
+      taddr= addr.s_addr;
       if (taddr == htonl(INADDR_BROADCAST))
       {	
 	puts("Broadcast");