From 7dddfa338800303335673df637a05d8aaaccdaa2 Mon Sep 17 00:00:00 2001
From: Christian Poessinger <christian@poessinger.com>
Date: Mon, 25 May 2020 21:11:43 +0200
Subject: dhcpv6-pd: T2506: add option to request specific prefix length

Some ISPs (e.g. Comcast) only delegate a /64 by default. You have to explicitly
"ask" for a bigger (e.g. /60) prefix. This commit adds a CLI node to request
a specific prefix length in the range 32 - 64.

  dhcpv6-options {
      prefix-delegation {
          length 60
      }
  }
---
 python/vyos/configdict.py    | 1 +
 python/vyos/ifconfig_vlan.py | 3 +++
 2 files changed, 4 insertions(+)

(limited to 'python')

diff --git a/python/vyos/configdict.py b/python/vyos/configdict.py
index 6afc78039..3e1f22d09 100644
--- a/python/vyos/configdict.py
+++ b/python/vyos/configdict.py
@@ -112,6 +112,7 @@ interface_default_data = {
     'dhcp_vendor_class_id': '',
     'dhcpv6_prm_only': False,
     'dhcpv6_temporary': False,
+    'dhcpv6_pd_length': '',
     'dhcpv6_pd_interfaces': [],
     'disable': False,
     'disable_link_detect': 1,
diff --git a/python/vyos/ifconfig_vlan.py b/python/vyos/ifconfig_vlan.py
index ec4d1da42..53a77c651 100644
--- a/python/vyos/ifconfig_vlan.py
+++ b/python/vyos/ifconfig_vlan.py
@@ -87,6 +87,9 @@ def apply_vlan_config(vlan, config):
     if config['dhcpv6_temporary']:
         vlan.dhcp.v6.options['dhcpv6_temporary'] = True
 
+    if config['dhcpv6_pd_length']:
+        vlan.dhcp.v6.options['dhcpv6_pd_length'] = config['dhcpv6_pd_length']
+
     if config['dhcpv6_pd_interfaces']:
         vlan.dhcp.v6.options['dhcpv6_pd_interfaces'] = config['dhcpv6_pd_interfaces']
 
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