Pouze v /usr/local/portage/net-misc/ptrtd/files: ptrtd
diff -u /usr/portage/net-misc/ptrtd/files/ptrtd.confd /usr/local/portage/net-misc/ptrtd/files/ptrtd.confd
--- /usr/portage/net-misc/ptrtd/files/ptrtd.confd	2004-07-15 02:37:03.000000000 +0200
+++ /usr/local/portage/net-misc/ptrtd/files/ptrtd.confd	2008-11-27 18:55:50.000000000 +0100
@@ -7,6 +7,15 @@
 #
 # Peter Johanson <latexer@gentoo.org>
 
+# tun or tap (default). If used INTERFACE must be defined too,
+#DRIVER='tun'
+
+# Interface name (default is first unused tap0, tap1 etc.)
+#INTERFACE='tun1'
+
 # IPV6_PREFIX should be an IPv6 prefix, usually of length 64
-#
 #IPV6_PREFIX="3ffe:abcd:1234:9876::"
+
+# Length of IPv6 prefix (default 64)
+#PREFIX_LEN='96'
+
diff -u /usr/portage/net-misc/ptrtd/files/ptrtd.initd /usr/local/portage/net-misc/ptrtd/files/ptrtd.initd
--- /usr/portage/net-misc/ptrtd/files/ptrtd.initd	2004-07-15 02:37:03.000000000 +0200
+++ /usr/local/portage/net-misc/ptrtd/files/ptrtd.initd	2008-11-27 18:49:50.000000000 +0100
@@ -12,21 +12,29 @@
 }
 
 checkconfig() {
-	if [ -z ${IPV6_PREFIX} ]
-	then
+	if [ -z ${IPV6_PREFIX} ]; then
 		eerror "You must define IPV6_PREFIX in /etc/conf.d/ptrtd"
 		return 1
-	else
-		return 0
 	fi
+
+	if [[ -n ${DRIVER} && -z ${INTERFACE} ]]; then
+		eerror "You must define INTERFACE along with DRIVER in" \
+			"/etc/conf.d/ptrtd"
+		return 1
+	fi
+
+	return 0
 }
+
 start() {
 	
 	checkconfig || return 1
 
 	ebegin "Starting ptrtd"
 	start-stop-daemon --start --quiet --exec /usr/sbin/ptrtd \
-		-- -p ${IPV6_PREFIX} &> /dev/null
+		-- ${INTERFACE:+-i} "$DRIVER"${DRIVER:+:}"$INTERFACE" \
+		-p ${IPV6_PREFIX} \
+		${PREFIX_LEN:+-l} "${PREFIX_LEN}" &> /dev/null
 	eend $?
 }