--- ippool-1.3/ippool_api.c.orig	2020-08-30 22:11:47.358711538 +0200
+++ ippool-1.3/ippool_api.c	2020-08-30 22:11:51.015358395 +0200
@@ -24,6 +24,7 @@
  */
 
 #include <net/ethernet.h>
+#include <netinet/in.h>
 
 #include "usl.h"
 
@@ -181,10 +182,12 @@
 	 * non-loopback interface, reject the request.
 	 */
 	if ((!ippool_opt_remote_rpc) &&
-	    ((xprt->xp_raddr.sin_addr.s_addr != htonl(INADDR_LOOPBACK)) &&
-	     (xprt->xp_raddr.sin_addr.s_addr != htonl(INADDR_ANY)))) {
+	    memcmp(&xprt->xp_raddr.sin6_addr.s6_addr, &in6addr_loopback, 16) &&
+	    memcmp(&xprt->xp_raddr.sin6_addr.s6_addr, &in6addr_any, 16)) {
 		if (ippool_opt_debug) {
-			ippool_log(LOG_ERR, "Rejecting RPC request from %s", inet_ntoa(xprt->xp_raddr.sin_addr));
+			char straddr[INET6_ADDRSTRLEN];
+			inet_ntop(AF_INET6, &xprt->xp_raddr.sin6_addr, straddr, sizeof(straddr));
+			ippool_log(LOG_ERR, "Rejecting RPC request from %s", straddr);
 		}
 		svcerr_auth(xprt, AUTH_TOOWEAK);
 		return -EPERM;
--- ippool-1.3/Makefile.orig	2008-02-24 17:22:25.000000000 +0100
+++ ippool-1.3/Makefile	2020-08-30 22:20:33.769193061 +0200
@@ -83,8 +83,8 @@
 
 CPPFLAGS=		$(CPPFLAGS.ippooltest)
 CFLAGS=			-I. -Iusl -Icli -MMD -Wall -g $(CPPFLAGS) $(CPPFLAGS.dmalloc)
-LDFLAGS.ippoold=	-Wl,-E -L. -Lusl -lusl -lnsl -ldl $(LIBS.dmalloc) -lc
-LDFLAGS.ippoolconfig=	-Lcli -lcli -lreadline -lcurses -lnsl $(LIBS.dmalloc) -lc
+LDFLAGS.ippoold=	-Wl,-E -L. -Lusl -lusl -ltirpc -ldl $(LIBS.dmalloc) -lc
+LDFLAGS.ippoolconfig=	-Lcli -lcli -lreadline -lcurses -ltirpc $(LIBS.dmalloc) -lc
 
 OPT_CFLAGS?=		-O