diff --git a/release/picobsd/floppy.tree/etc/rc.conf b/release/picobsd/floppy.tree/etc/rc.conf
index d0717cd3494..d9d4bbf6720 100644
--- a/release/picobsd/floppy.tree/etc/rc.conf
+++ b/release/picobsd/floppy.tree/etc/rc.conf
@@ -1,6 +1,8 @@
 # Sample rc.conf file for PicoBSD
 # you should mostly set variables here, see rc.conf.defaults.
 
+tcp_extensions=YES # enable rfc1323 and rfc1644
+
 case ${hostname} in
 *)
 	echo "processing rc.conf for ${hostname}"