--- udptunnel-1.1/configure.in.orig	2001-09-06 21:07:21.000000000 +0200

+++ udptunnel-1.1/configure.in	2020-08-25 21:38:54.273078764 +0200

@@ -13,8 +13,8 @@

 dnl Checks for libraries.

-AC_CHECK_LIB(nsl, gethostname)

-AC_CHECK_LIB(socket, socket)

+AC_SEARCH_LIBS(gethostname, nsl)

+AC_SEARCH_LIBS(socket, socket)

 dnl Checks for header files.

 AC_HEADER_STDC

--- udptunnel-1.1/host2ip.c.orig	1999-05-19 21:58:25.000000000 +0200

+++ udptunnel-1.1/host2ip.c	2020-08-25 21:44:26.851277034 +0200

@@ -37,19 +37,9 @@

   else if ((hep = gethostbyname(host))) {

     in = *(struct in_addr *)(hep->h_addr_list[0]);

   }

-  /* As a last resort, try YP. */

   else {

-    static char *domain = 0;  /* YP domain */

-    char *value;              /* key value */

-    int value_len;            /* length of returned value */

-

-    if (!domain) yp_get_default_domain(&domain);

-    if (yp_match(domain, "hosts.byname", host, strlen(host), &value, &value_len) == 0) {

-      in.s_addr = inet_addr(value);

-    } else {

       /* Everything failed */

       in.s_addr = INADDR_ANY;

-    }

   }

   return in;

 } /* host2ip */

diff --git a/udptunnel/host2ip.c b/udptunnel/host2ip.c

index 78f23aa..e435285 100755

--- udptunnel/host2ip.c

+++ udptunnel/host2ip.c

@@ -4,7 +4,6 @@

 #include <netdb.h>           /* gethostbyname() */

 #include <netinet/in.h>      /* sockaddr_in */

 #include <arpa/inet.h>       /* inet_addr() */

-#include <rpcsvc/ypclnt.h>   /* YP */

 #include <ctype.h>           /* isspace() */

 #include "host2ip.h"