sstp: T2566: Fix to allow IPv6 only pools

To allow IPv6 only for vpn sstp sessions we have to add
'ppp-options' which can disable IPv4 allocation explicity.
Additional IPv6 ppp-options and fix template for it.

3 files changed, 56 insertions, 0 deletions

diff --git a/interface-definitions/include/accel-ppp/ppp-options-ipv4.xml.i b/interface-definitions/include/accel-ppp/ppp-options-ipv4.xml.i
new file mode 100644
index 000000000..3e065329d
--- /dev/null
+++ b/interface-definitions/include/accel-ppp/ppp-options-ipv4.xml.i
@@ -0,0 +1,23 @@
+<!-- include start from accel-ppp/ppp-options-ipv4.xml.i -->
+<leafNode name="ipv4">
+  <properties>
+    <help>IPv4 negotiation algorithm</help>
+    <constraint>
+      <regex>^(deny|allow)$</regex>
+    </constraint>
+    <constraintErrorMessage>invalid value</constraintErrorMessage>
+    <valueHelp>
+      <format>deny</format>
+      <description>Do not negotiate IPv4</description>
+    </valueHelp>
+    <valueHelp>
+      <format>allow</format>
+      <description>Negotiate IPv4 only if client requests</description>
+    </valueHelp>
+    <completionHelp>
+      <list>deny allow</list>
+    </completionHelp>
+  </properties>
+  <defaultValue>allow</defaultValue>
+</leafNode>
+<!-- include end -->
diff --git a/interface-definitions/include/accel-ppp/ppp-options-ipv6.xml.i b/interface-definitions/include/accel-ppp/ppp-options-ipv6.xml.i
new file mode 100644
index 000000000..b9fbac5c6
--- /dev/null
+++ b/interface-definitions/include/accel-ppp/ppp-options-ipv6.xml.i
@@ -0,0 +1,31 @@
+<!-- include start from accel-ppp/ppp-options-ipv6.xml.i -->
+<leafNode name="ipv6">
+  <properties>
+    <help>IPv6 (IPCP6) negotiation algorithm</help>
+    <constraint>
+      <regex>^(deny|allow|prefer|require)$</regex>
+    </constraint>
+    <constraintErrorMessage>invalid value</constraintErrorMessage>
+    <valueHelp>
+      <format>deny</format>
+      <description>Do not negotiate IPv6</description>
+    </valueHelp>
+    <valueHelp>
+      <format>allow</format>
+      <description>Negotiate IPv6 only if client requests</description>
+    </valueHelp>
+    <valueHelp>
+      <format>prefer</format>
+      <description>Ask client for IPv6 negotiation, do not fail if it rejects</description>
+    </valueHelp>
+    <valueHelp>
+      <format>require</format>
+      <description>Require IPv6 negotiation</description>
+    </valueHelp>
+    <completionHelp>
+      <list>deny allow prefer require</list>
+    </completionHelp>
+  </properties>
+  <defaultValue>deny</defaultValue>
+</leafNode>
+<!-- include end -->
diff --git a/interface-definitions/vpn_sstp.xml.in b/interface-definitions/vpn_sstp.xml.in
index 5406ede41..ad905a1f0 100644
--- a/interface-definitions/vpn_sstp.xml.in
+++ b/interface-definitions/vpn_sstp.xml.in
@@ -43,6 +43,8 @@
             </properties>
             <children>
               #include <include/accel-ppp/ppp-mppe.xml.i>
+              #include <include/accel-ppp/ppp-options-ipv4.xml.i>
+              #include <include/accel-ppp/ppp-options-ipv6.xml.i>
               #include <include/accel-ppp/lcp-echo-interval-failure.xml.i>
               #include <include/accel-ppp/lcp-echo-timeout.xml.i>
             </children>