From ba06bfed4fc84b699689932eeb3af9b9be0f5cd7 Mon Sep 17 00:00:00 2001
From: Christian Poessinger <christian@poessinger.com>
Date: Tue, 19 May 2020 21:27:43 +0200
Subject: dhcpv6-pd: T421: support ethernet based interfaces

Add support for prefix delegation when receiving the prefix via ethernet,
bridge, bond, wireless.
---
 python/vyos/configdict.py    | 27 +++++++++++++++++++++++++++
 python/vyos/ifconfig_vlan.py |  3 +++
 2 files changed, 30 insertions(+)

(limited to 'python')

diff --git a/python/vyos/configdict.py b/python/vyos/configdict.py
index 35c7ad1fc..eec64e964 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': [],
     'disable': False,
     'disable_link_detect': 1,
     'ip_disable_arp_filter': 1,
@@ -226,6 +227,32 @@ def intf_to_dict(conf, default):
     if conf.exists(['dhcpv6-options', 'parameters-only']):
         intf['dhcpv6_prm_only'] = True
 
+    # DHCPv6 prefix delegation (RFC3633)
+    current_level = conf.get_level()
+    if conf.exists(['dhcpv6-options', 'delegate']):
+        for interface in conf.list_nodes(['dhcpv6-options', 'delegate']):
+            conf.set_level(current_level + ['dhcpv6-options', 'delegate', interface])
+            pd = {
+                'ifname': interface,
+                'sla_id': '',
+                'sla_len': '',
+                'if_id': ''
+            }
+
+            if conf.exists(['sla-id']):
+                pd['sla_id'] = conf.return_value(['sla-id'])
+
+            if conf.exists(['sla-len']):
+                pd['sla_len'] = conf.return_value(['sla-len'])
+
+            if conf.exists(['interface-id']):
+                pd['if_id'] = conf.return_value(['interface-id'])
+
+            intf['dhcpv6_pd'].append(pd)
+
+    # re-set config level
+    conf.set_level(current_level)
+
     # DHCPv6 temporary IPv6 address
     if conf.exists(['dhcpv6-options', 'temporary']):
         intf['dhcpv6_temporary'] = True
diff --git a/python/vyos/ifconfig_vlan.py b/python/vyos/ifconfig_vlan.py
index 6410be9aa..a53136ebf 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']:
+        vlan.dhcp.v6.options['dhcpv6_pd'] = config['dhcpv6_pd']
+
     # update interface description used e.g. within SNMP
     vlan.set_alias(config['description'])
     # ignore link state changes
-- 
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