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 --pid -q -4 -I :7001 -o $@.tar -o - | openssl md5 > $@.md5 & \
 		sleep 1; \
 		rm -f $@.tar; \
-		./mbuffer --pid -i test.tar -o /dev/null -4 -O localhost:7001 -H; \
+		./mbuffer --pid -i test.tar -o /dev/null -4 -O 127.0.0.1:7001 -H; \
 		wait
 	sync
 	diff $@.md5 test.md5