From e9e4ca02630da1bf6313f1ad41f0ec1918c36dac Mon Sep 17 00:00:00 2001
From: Stefan Tomanek <stefan.tomanek@wertarbyte.de>
Date: Mon, 25 Jul 2016 23:15:45 +0200
Subject: add preference switching options to ipv6pref.sh

---
 bash_completion/ipv6pref | 13 +++++++++++--
 ipv6pref.pod             | 19 ++++++++++++++++++-
 scripts/ipv6pref.sh      | 17 ++++++++++++++++-
 3 files changed, 45 insertions(+), 4 deletions(-)

diff --git a/bash_completion/ipv6pref b/bash_completion/ipv6pref
index 0840faf..e0c8eef 100644
--- a/bash_completion/ipv6pref
+++ b/bash_completion/ipv6pref
@@ -1,9 +1,18 @@
 # bash completion for ipv6pref(1)
 
 _ipv6pref() {
+	local cur prev words cword
 	_init_completion || return
 
 	for (( i=1; i <= COMP_CWORD; i++ )); do
-		_command_offset $i
+		if [[ ${COMP_WORDS[i]} != -* ]]; then
+			_command_offset $i
+			return
+		fi
 	done
-} && complete -F _ipv6pref ipv6pref v6pub v6tmp
+	if [[ "$cur" == -* ]]; then
+		COMPREPLY=( $( compgen -W '-p -t' -- "$cur" ) )
+		return
+	fi
+
+} && complete -F _ipv6pref ipv6pref.sh ipv6pref v6pub v6tmp
diff --git a/ipv6pref.pod b/ipv6pref.pod
index 7ca7240..38e0533 100644
--- a/ipv6pref.pod
+++ b/ipv6pref.pod
@@ -6,7 +6,7 @@ ipv6pref -- set IPv6 address selection preference
 
 =head1 SYNOPSIS
 
-B<ipv6pref> F<< <cmd> >>
+B<ipv6pref> [B<-p> | B<-t>] F<< <cmd> >>
 
 B<v6pub> F<< <cmd> >>
 
@@ -24,6 +24,23 @@ IPv6 Privacy Extensions.
 
 =back
 
+=head1 OPTIONS
+
+=over
+
+=item B<-p>
+
+Instruct the called program to use the public IPv6 address for outgoing
+connections. This is the default if the wrapper is called by the name B<v6pub>.
+
+=item B<-t>
+
+Instruct the called program to use the temporary, randomly generated IPv6
+addresses for outgoing connections. This is the default if the wrapper is
+called by the name B<v6tmp>.
+
+=back
+
 =head1 AUTHOR
 
 Stefan Tomanek E<lt>stefan.tomanek@wertarbyte.deE<gt>
diff --git a/scripts/ipv6pref.sh b/scripts/ipv6pref.sh
index a7e583b..3d0af01 100755
--- a/scripts/ipv6pref.sh
+++ b/scripts/ipv6pref.sh
@@ -39,17 +39,32 @@ if ! [ "${IPV6PREF_WAS_HERE:-}" ]; then
 		export LD_PRELOAD="${LIB} ${LD_PRELOAD}"
 	fi
 
+	# check wrapper name
 	WRAPPER="$(basename $0)"
 	case "$WRAPPER" in
 		v6pub)
-			dbg "Using public address"
+			dbg "Using public address by default"
 			export IPV6PREF_ADDR="pub"
 			;;
 		v6tmp)
+			dbg "Using temporary address by default"
+			export IPV6PREF_ADDR="tmp"
+			;;
+	esac
+	# check for argument
+	case "${1:-}" in
+		"-p")
+			dbg "Using public address"
+			export IPV6PREF_ADDR="pub"
+			shift
+			;;
+		"-t")
 			dbg "Using temporary address"
 			export IPV6PREF_ADDR="tmp"
+			shift
 			;;
 	esac
+
 fi
 
 IPV6PREF_WAS_HERE=1 exec "$@"
-- 
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