Differences

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--- doc:appunti:net:ipv6_on_ppp [2026/09/27 07:27] – [Using a static IPv6 address] niccolo
+++ doc:appunti:net:ipv6_on_ppp [2026/09/27 09:37] (current) – [Commands] niccolo
@@ Line 574: / Line 574: @@
 # Execute first the default Debian script (DNS, etc.), if it exists.
-[ -x /etc/wide-dhcpv6/dhcp6c-script ] && /etc/wide-dhcpv6/dhcp6c-script
+# We do not need this because the DNS is configured locally, not via DHCPv6.
+#[ -x /etc/wide-dhcpv6/dhcp6c-script ] && /etc/wide-dhcpv6/dhcp6c-script
 get_src() {
@@ Line 600: / Line 601: @@
 </code>
-===== Commands =====
+To hook this script to the moment the IPv6 configuration is received, modify the **/etc/wide-dhcpv6/dhcp6c.conf** configuration file by replacing the default value of //script// in the //interface ppp0// section:
+<file>
+interface ppp0 {
+    # Send an option for "Identity Association for Prefix Delegation" with ID=0.
+    send ia-pd 0;
+    # Script executed when the daemon receives a reply message.
+    script "/etc/wide-dhcpv6/dhcp6c-src-route";
+};
+</file>
+If you need to call the default Debian hook script **/etc/wide-dhcpv6/dhcp6c-script** (used mainly to set the DNS nameserver on DHCPv6) you need to uncomment the relevant line in the scrtip above.
+You can see all the times that the script is executed (because the DHCPv6 lease renews) using the command:
+<code>
+journalctl --boot -t dhcp6c-src
+</code>
+===== Useful commands =====
 Mostra la **rotta predefinita** per IPv6: