.SH "SYNOPSIS"
.
.B tripe
-.RB [ \-DF ]
+.RB [ \-46DF ]
.RB [ \-d
.IR dir ]
.RB [ \-b
per line, and exits with status 0. This is intended for the use of the
start-up script, so that it can check that it will actually work.
.TP
+.B "\-4, \-\-ipv4"
+Use only IPv4 addresses. The server will resolve names only to IPv4
+addresses, and not attempt to create IPv6 sockets.
+.TP
+.B "\-6, \-\-ipv6"
+Use only IPv6 addresses. The server will resolve names only to IPv6
+addresses, and not attempt to create IPv4 sockets. Note that v6-mapped
+IPv4 addresses won't work either.
+.TP
.B "\-D, \-\-daemon"
Dissociates from its terminal and starts running in the background after
completing the initialization procedure described above. If running as
Names the bulk-crypto transform to use. See below.
.TP
.B blkc
-Names a block cipher, used by some bulk-crypto transforms (e.g.,
+Names a blockcipher, used by some bulk-crypto transforms (e.g.,
.BR iiv ).
-The default is to use the block cipher underlying the chosen
+The default is to use the blockcipher underlying the chosen
.BR cipher ,
if any.
.TP
.TP
.B iiv
A newer `implicit-IV' transform. Rather than having an explicit random
-IV, the IV is computed from the sequence number using a block cipher.
+IV, the IV is computed from the sequence number using a blockcipher.
This has two advantages over the
.B v0
transform. Firstly, it adds less overhead to encrypted messages