diff -u mbuffer-20121111.orig/Makefile.in mbuffer-20121111/Makefile.in
--- mbuffer-20121111.orig/Makefile.in	2012-11-16 11:17:11.000000000 +0100
+++ mbuffer-20121111/Makefile.in	2012-12-04 22:43:00.186863737 +0100
@@ -77,7 +77,7 @@
 	./mbuffer -q -I :8000 -o $@.tar -o - | openssl md5 > $@.md5 & \
 		sleep 1; \
 		rm -f $@.tar; \
-		./mbuffer -i test.tar -o /dev/null -O localhost:8000 -H; \
+		./mbuffer -i test.tar -o /dev/null -O 127.0.0.1:8000 -H; \
 		wait
 	sync
 	diff $@.md5 test.md5
@@ -92,7 +92,7 @@
 	./mbuffer -q -6 -I :8000 | openssl md5 > $@.md5 & \
 		sleep 1; \
 		rm -f $@.tar; \
-		./mbuffer -i test.tar -o /dev/null -6 -O localhost:8000 -o $@.tar -H; \
+		./mbuffer -i test.tar -o /dev/null -6 -O ::1:8000 -o $@.tar -H; \
 		wait
 	sync
 	diff $@.md5 test.md5