[packages] wide-dhcpv6: generate used DUID from interface mac address before starting...

git-svn-id: svn://svn.openwrt.org/openwrt/packages@25461 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/ipv6/wide-dhcpv6/files/dhcp6c.init b/ipv6/wide-dhcpv6/files/dhcp6c.init
index ea15262..a1b41d4 100644 (file)
--- a/ipv6/wide-dhcpv6/files/dhcp6c.init
+++ b/ipv6/wide-dhcpv6/files/dhcp6c.init
@@ -11,6 +11,25 @@ get_ifname() {
        return 0
 }
 
+dhcp6c_write_duid() {
+       local ifname="$1"
+       local mac=$(ifconfig "$client_ifname" | sed -ne 's/.*HWaddr //p')
+       local oIFS="$IFS"; IFS=":"; set -- $mac; IFS="$oIFS"
+
+       # low endian
+       if [ "$(printf \\1 | hexdump -n1 -ve '8/2 "%04x"')" = "0001" ]; then
+               printf \\x0a\\x00
+
+       # big endian
+       else
+               printf \\x00\\x0a
+       fi
+
+       printf \\x00\\x03\\x00\\x06\\x$1\\x$2\\x$3\\x$4\\x$5\\x$6
+
+       logger -t dhcp6c "Using DUID 00:03:00:06:$1:$2:$3:$4:$5:$6"
+}
+
 dhcp6c_write_interface() {
        local cfg=$1
        local sla_id
@@ -99,15 +118,17 @@ start() {
        config_get_bool enabled basic enabled 0
        [ $enabled -eq 0 ] && return 0
        
-       logger starting dhcp6c
+       logger -t dhcp6c starting dhcp6c
        
        local client_interface
        config_get client_interface basic interface
        local client_ifname=$(get_ifname "$client_interface")
        
        local config_file="/var/etc/dhcp6c.conf"
+       local duid_file="/var/dhcp6c_duid"
        mkdir -m 755 -p /var/etc
        dhcp6c_write_config > $config_file
+       dhcp6c_write_duid > $duid_file
        
        local debug
        local debug_option
@@ -124,7 +145,7 @@ start() {
 
 stop() {
 
-       logger stopping dhcp6c
+       logger -t dhcp6c stopping dhcp6c
        rm -f /var/etc/dhcp6c.conf
        kill -TERM `cat /var/run/dhcp6c.pid`
        ACTION=stop /sbin/hotplug-call dhcp6c