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authorYuxiang Zhu <vfreex@gmail.com>2022-07-21 07:31:28 +0000
committerYuxiang Zhu <vfreex@gmail.com>2022-07-21 17:12:35 +0000
commit3253864641e797809a99401174688507a01c1255 (patch)
tree933fbd028fa5e7f700286ec4d458fbfbef324b9a
parentf424d84f41791949a2ada417ecdd45a3b842799a (diff)
downloadvyos-1x-3253864641e797809a99401174688507a01c1255.tar.gz
vyos-1x-3253864641e797809a99401174688507a01c1255.zip
T4550: router-advert: Add deprecate-prefix & decrement-lifetimes options
DeprecatePrefix and DecrementLifetimes options in radvd is useful in a DHCPv6-PD environment to accommodate prefix changes from ISP's delegating router. Though there is currently no integration between the DHCP PD client (wide-dhcpv6-client) and radvd, it could be a good start point to have the 2 options configurable by the user. https://phabricator.vyos.net/T4550 - deprecate-prefix: Upon shutdown, deprecate the prefix. This is useful in a DHCPv6 PD environment: When ISP re-assigns a new prefix, deprecate the old prefix that was advertised. - decrement-lifetimes: Decrement the values of the preferred and valid lifetimes for the prefix over time. This is also useful in a DHCPv6 PD environment to keep the advertised prefix's lifetimes in sync with the prefix from delegating router.
-rw-r--r--data/templates/router-advert/radvd.conf.j22
-rw-r--r--interface-definitions/service-router-advert.xml.in12
2 files changed, 14 insertions, 0 deletions
diff --git a/data/templates/router-advert/radvd.conf.j2 b/data/templates/router-advert/radvd.conf.j2
index ed15b32f0..a464795ad 100644
--- a/data/templates/router-advert/radvd.conf.j2
+++ b/data/templates/router-advert/radvd.conf.j2
@@ -50,6 +50,8 @@ interface {{ iface }} {
AdvValidLifetime {{ prefix_options.valid_lifetime }};
AdvOnLink {{ 'off' if prefix_options.no_on_link_flag is vyos_defined else 'on' }};
AdvPreferredLifetime {{ prefix_options.preferred_lifetime }};
+ DeprecatePrefix {{ 'on' if prefix_options.deprecate_prefix is vyos_defined else 'off' }};
+ DecrementLifetimes {{ 'on' if prefix_options.decrement_lifetime is vyos_defined else 'off' }};
};
{% endfor %}
{% endif %}
diff --git a/interface-definitions/service-router-advert.xml.in b/interface-definitions/service-router-advert.xml.in
index 258b7b749..87ec512d6 100644
--- a/interface-definitions/service-router-advert.xml.in
+++ b/interface-definitions/service-router-advert.xml.in
@@ -249,6 +249,18 @@
<valueless/>
</properties>
</leafNode>
+ <leafNode name="deprecate-prefix">
+ <properties>
+ <help>Upon shutdown, this option will deprecate the prefix by announcing it in the shutdown RA</help>
+ <valueless/>
+ </properties>
+ </leafNode>
+ <leafNode name="decrement-lifetime">
+ <properties>
+ <help>Lifetime is decremented by the number of seconds since the last RA - use in conjunction with a DHCPv6-PD prefix</help>
+ <valueless/>
+ </properties>
+ </leafNode>
<leafNode name="preferred-lifetime">
<properties>
<help>Time in seconds that the prefix will remain preferred</help>