6relayd IPv6 server and relay configuration

The /etc/config/6relayd configures the 6relayd IPv6 server & relay.

6relayd is a daemon for serving and relaying IPv6 management protocols to configure clients and downstream routers.

6relayd provides server services for RA, stateless DHCPv6, DHCPv6-PD and can be used to relay RA, DHCPv6 and NDP between routed (non-bridged) interfaces in case no delegated prefixes are provided by the upstream router.

Examples

Example #1: Provide Router Discovery and stateless DHCPv6 in server mode and fallback to relaying if there is no public prefix on the master interface.

config server
       option master   'wan6'
       option network  'lan guest'
       option rd       'server'
       option dhcpv6   'server'
       option fallback_relay      'rd dhcpv6 ndp

Example #2: Create a relay for several networks (here wan6 and lan) in proxy mode. This can be used to proxy Router Discovery, DHCPv6 and NDP.

config server
       option master   'wan6'
       option network  'lan'
       option rd       'relay'
       option dhcpv6   'relay'
       option ndp      'relay

Example #3: Provide Router Discovery and stateless DHCPv6 in server mode This can be used as a small radvd and stateless DHCPv6-server replacement.

config server
       option network  'lan'
       option rd       'server'
       option dhcpv6   'server

Sections

Each section of type 'server defines an instance of 6relayd that will be run.

Services of 6relayd can be used in two modes:

server if you want to use 6relayd to only announce the router and / or use it as a stateless DHCPv6 server.
relay for all other use cases (e.g. relaying between different interfaces, proxying NDP, acting as a DHCPv6 relay, …).

Name	Values	Required	Default	Description
`master`	1 <logical interface>	yes, if services in relay-mode are present		Specifies the network which is used as master for relaying
`network`	1 or more <logical interface>	yes		Specifies the network on which the 6relayd instance should provide services (first network is master, if section type is `relay`)
`rd`	[relay,server]	no		Router Discovery mode of operation (empty = disabled)
`dhcpv6`	[relay,server]	no		DHCPv6 mode of operation (empty = disabled)
`ndp`	[relay]	no		NDP-Proxy mode of operation (empty = disabled)
`compat_ula`	[0,1]	no	0	Ensure compatbility with broken devices and deprecate ULA if public prefixes are available.
`fallback_relay`	1 or more [rd,dhcpv6,ndp]	no		Services to relay as fallback if there is no public prefix on the wan interface available
`always_rewrite_dns`	[0,1]	no	0	Define whether the RD- and DHCPv6-relay will always announce the DNS on the router itself instead of the one provided from the upstream router
`rewrite_dns_addr`	<IPv6-address>	no		Override the announced DNS-server with the specified address
`always_assume_default`	[0,1]	no	0	Define whether the RD-server will assume that IPv6 connectivity is present even if no public addresses are announced.

doc/uci/6relayd.txt · Last modified: 2013/04/24 09:24 by steven

OpenWrt

Wiki Search

Actions

Donate

Translations

6relayd IPv6 server and relay configuration

Examples

Sections