setaou / ndp-proxy

NDP Proxy

NDP Proxy

This software is an answer to the fact that the Linux kernel does not support to proxy NDP packets for a whole IPv6 range but only for a given set of addresses.

ndp-proxy listen to an interface, and when it receive an NDP Network Solicitation packet for an IPv6 in a given subnet, it will answer a Network Advertisement packet as if that IP was actually bound to the interface. This allows to route a subnet through a machine acting as a router without having to configure a route to that machine on upstream routers. It is useful especially if upstream routers are managed by somebody else and cant be modified.

Usage

/usr/sbin/ndp-proxy <options>

Options:
 -h --help                              Display this help
 -i --interface <interface>             Sets the interface
 -m --netmask <netmask>                 Sets the netmask
 -n --network <network>                 Sets the network
 -p --pidfile <pidfile>                 Sets the pidfile
 -d --daemon                            Daemon mode
 -v --verbose                           Verbose mode
 -q --quiet                             Quiet mode

Build

make && make install

An init script can also be installed with :

make install-init

Options can then be set in /etc/sysconfig/ndp-proxy or /etc/default/ndp-proxy like this :

OPTIONS="-i eth0 -n ::1 -d"