Revision as of 09:26, 12 July 2014

Radvd - IPv6 Router Advertisement Daemon

The IPv6 Router Advertisement Daemon (radvd) periodically sends router advertisement (RA) messages to a local ethernet LAN advertising among other things, the IPv6 prefix and router address.

libdaemon

Libdaemon is a dependancy for radvd.

Download libdaemon and cross compile for ARM assuming your ARM cross compiler is located at /opt/arm-2011.09/

wget http://0pointer.de/lennart/projects/libdaemon/libdaemon-0.14.tar.gz
tar -xzf libdaemon-0.14.tar.gz
cd libdaemon-0.14
./configure --host=arm-linux-gnueabi \
            --prefix=/usr/arm-linux-gnueabi \   
            ac_cv_func_setpgrp_void=yes
make
make install

Now copy libdaemon.so.0.5.0 to your target and update the dynamic linker run-time bindings with ldconfig:

cp /usr/arm-linux-gnueabi/lib/libdaemon.so.0.5.0 /home/export/rootfs/lib

Cross Compiling Radvd for ARM

wget http://www.litech.org/radvd/dist/radvd-1.14.tar.gz
tar -xzf radvd-1.14.tar.gz
cd radvd-1.14
./configure --prefix= \
            --host=arm-linux-gnueabi \
            --sysconfdir=/etc \
            PKG_CONFIG_PATH=/home/temp/radvd/lib/pkgconfig
make
make install DESTDIR=/home/export/rootfs

Configuration

A default /etc/radvd.conf file is shown below advertising an address prefix provided by Internode.

interface eth0 {
	AdvSendAdvert on;
	MinRtrAdvInterval 3;
	MaxRtrAdvInterval 10;
	prefix 2003:44b9:4219:6400::/64 {
		AdvOnLink on;
		AdvAutonomous on;
	};
};

Options

• AdvSendAdvert: Enable router to send periodic router advertisements and respond to router solicitations.
• MinRtrAdvInterval: Minimum time between sending unsolicited multicast router advertisements (seconds)
• MaxRtrAdvInterval: Maximum time between sending unsolicited multicast router advertisements (seconds). Must be no greater than 1800 seconds (30 Minutes)
• Prefix: Prefix Definition
  • AdvOnLink: Indicates if prefix can be used for on-link determination.
  • AdvAutonomous: When set, indicates that this prefix can be used for autonomous address configuration as specified in RFC 4862.
  • AdvRouterAddr: When set, indicates that the address of interface is sent instead of network prefix

The daemon can be started by simply running:

radvd

Download Pre-built Binaries

The link below contains a bzip2 tarball of the radvd binaries compiled for ARM :

• radvd-1.10.0-arm-linux-gnueabi.tar.gz [md5hash cc5f5af7e2df34b3589fbfb5115920a3]

• Built using:
  • Libdaemon-0.14
  • radvd-1.10.0
  • arm-linux-gnueabi-gcc version 4.7.3 (Ubuntu/Linaro 4.7.3-1ubuntu1)