+#
+# uncomment the following to enable IPv6
+#
+# Solaris 8 and on includes support for IPv6
+#
+#CFLAGS += -DINET6
+#OBJS += ipv6cp.o eui64.o
+
+# Uncomment to enable MS-CHAP
+#CFLAGS += -DUSE_CRYPT -DCHAPMS -DHAVE_CRYPT_H
+#OBJS += chap_ms.o pppcrypt.o md4.o sha1.o
+
+# Uncomment for CBCP
+#CFLAGS += -DCBCP_SUPPORT
+#OBJS += cbcp.o