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introduce 'dhcpv6-client-lease' to run scripts on lease

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Christian Hesse 2026-04-13 16:27:40 +02:00
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Run other scripts on IPv6 DHCP client lease
===========================================
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[⬅️ Go back to main README](../README.md)
> ℹ️ **Info**: This script can not be used on its own but requires the base
> installation. See [main README](../README.md) for details.
Description
-----------
This script is supposed to run from IPv6 DHCP client as lease script. On a
DHCP leasse it runs each script containing the following line, where `##` is
a decimal number for ordering:
# provides: dhcpv6-client-lease, order=##
The lease script is started with some variables injected, but these are not
available in child scripts. However this script makes these variables
available with a global variable. This code is required in child script:
:global EitherOr;
:global DHCPv6ClientLeaseVars;
:local NaAddress [ $EitherOr $"na-address" ($DHCPv6ClientLeaseVars->"na-address") ];
:local NaValid [ $EitherOr $"na-valid" ($DHCPv6ClientLeaseVars->"na-valid") ];
:local PdPrefix [ $EitherOr $"pd-prefix" ($DHCPv6ClientLeaseVars->"pd-prefix") ];
:local PdValid [ $EitherOr $"pd-valid" ($DHCPv6ClientLeaseVars->"pd-valid") ];
:local Options [ $EitherOr $"options" ($DHCPv6ClientLeaseVars->"options") ];
The values are available under different name then, use `$PdPrefix` instead
of `$"pd-prefix"`, and so on. The resulting script supports both, being a
lease script itself or being run as child.
Currently it runs if available, in order:
* [ipv6-update](ipv6-update.md)
Requirements and installation
-----------------------------
Just install the script:
$ScriptInstallUpdate dhcpv6-client-lease;
... and add it as `lease-script` to your dhcp client:
/ipv6/dhcp-client/set lease-script="dhcpv6-client-lease" [ find ];
See also
--------
* [Update configuration on IPv6 prefix change](ipv6-update.md)
---
[⬅️ Go back to main README](../README.md)
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