Difference between revisions of "IPv6 Router Advertisements"

From VyOS Wiki
Jump to: navigation, search
(Added how to receive RA)
Line 93: Line 93:
 
* min-internal/max-interval - min and max interval between unsolicited multicast RAs
 
* min-internal/max-interval - min and max interval between unsolicited multicast RAs
 
* name-server: advertise DNS server per https://tools.ietf.org/html/rfc6106
 
* name-server: advertise DNS server per https://tools.ietf.org/html/rfc6106
 +
 +
== Receiving Router Advertisements ==
 +
 +
To receive and accept RAs on an interface, you need to enable it via sysctl with the following command:
 +
 +
<pre>
 +
sysctl -w net.ipv6.conf.eth0.accept_ra=2
 +
</pre>
 +
 +
[[ Category:User_documentation ]]

Revision as of 18:53, 27 March 2017

Router Advertisements

Router advertisements are described in https://tools.ietf.org/html/rfc4861#section-4.2 .

Supported interface types:

  • bonding
  • bridge
  • ethernet
  • l2tpv3
  • openvpn
  • psuedo-ethernet
  • tunnel
  • vxlan
  • wireless
  • wirelessmodem

To enable or disable, use

set interfaces <interface> ipv6 router-advert send-advert <true or false>

To set the options described in "Router Advertisement Message Format", start from

set interfaces <interface> ipv6 router-advert

With sub-options:

RFC Field VyOS Config Option
Cur Hop Limit cur-hop-limit
"Managed address configuration" flag managed-flag
"Other configuration" flag other-config-flag
Router Lifetime default-lifetime
Reachable Time reachable-time
Retrans Timer retrans-timer
MTU link-mtu
Prefix Information See below

Prefix Information

Prefix information is described in https://tools.ietf.org/html/rfc4861#section-4.6.2

To set the fields described, start from

set interfaces <interface> ipv6 router-advert prefix <h:h:h:h:h:h:h:h/x>

With sub-options:

RFC Field VyOS Config Option
Prefix Length 'x' in <h:h:h:h:h:h:h:h/x>
on-link flag on-link-flag
autonomous address-configuration flag autonomous-flag
Valid Lifetime valid-lifetime
Preferred Lifetime preferred-lifetime


Miscellaneous Options

Starting from

set interfaces <interface> ipv6 router-advert

There are the following additional options:

Receiving Router Advertisements

To receive and accept RAs on an interface, you need to enable it via sysctl with the following command:

sysctl -w net.ipv6.conf.eth0.accept_ra=2