swtpm,man: Clarify that --terminate works only for TCP data channel

The --terminate option is only for the TCP data channel.

Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
diff --git a/man/man8/swtpm.pod b/man/man8/swtpm.pod
index 1f4a903..4459043 100644
--- a/man/man8/swtpm.pod
+++ b/man/man8/swtpm.pod
@@ -43,7 +43,8 @@
 
 =item B<-t|--terminate>
 
-Terminate the TPM after the client has closed the connection.
+Terminate the TPM after the client has closed the data channel connection
+(TCP only).
 
 =item B<--server [type=tcp][,port=E<lt>portE<gt>[,bindaddr=E<lt>addressE<gt> [,ifname=E<lt>ifnameE<gt>]]][,fd=E<lt>fdE<gt>][,disconnect]>
 
diff --git a/src/swtpm/swtpm.c b/src/swtpm/swtpm.c
index ca66b3c..da84fe5 100644
--- a/src/swtpm/swtpm.c
+++ b/src/swtpm/swtpm.c
@@ -105,7 +105,8 @@
     "\n"
     "-p|--port <port> : use the given port\n"
     "-f|--fd <fd>     : use the given socket file descriptor\n"
-    "-t|--terminate   : terminate the TPM once a connection has been lost\n"
+    "-t|--terminate   : terminate the TPM once the data channel connection (TCP)\n"
+    "                   has been lost\n"
     "-d|--daemon      : daemonize the TPM\n"
     "--ctrl type=[unixio|tcp][,path=<path>][,port=<port>[,bindaddr=address[,ifname=ifname]]][,fd=<filedescriptor>|clientfd=<filedescriptor>][,mode=0...][,uid=uid][,gid=gid]\n"
     "                 : TPM control channel using either UnixIO or TCP sockets;\n"