work around "multi off" in /etc/host.conf and "::1 localhost"
*not* being the *first* "localhost" entry in /etc/hosts

--- a/Makefile.in
+++ b/Makefile.in
@@ -86,7 +86,7 @@ test2: test.md5
 	./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 -4 -O 127.0.0.1:8000 -H; \
 		wait
 	sync
 	diff $@.md5 test.md5
@@ -101,7 +101,7 @@ test3: test.md5
 	./mbuffer -q -6 -I :8000 | openssl md5 > $@.md5 & \
 		sleep 1; \
 		rm -f $@.tar; \
-		./mbuffer -i test.tar -o /dev/null -6 -O ip6-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