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--- doc:appunti:net:ipv6_on_ppp [2026/10/06 09:58] – [DHCPv6 client: the wide-dhcpv6-client.service] niccolo
+++ doc:appunti:net:ipv6_on_ppp [2026/10/06 10:34] (current) – [Configuring Shorewall6] niccolo
@@ Line 110: / Line 110: @@
 </code>
-===== IPv6 prefix delegation manual configuration =====
+===== Manual configuration of the IPv6 prefix delegation =====
 If your ISP assigns to you a **Prefix Delegation** (an IPv6 subnet), but it does not offer the **DHCPv6 service**, you need to configure the address manually. In our case the WAN IPv6 address is automatically negotiated on the ppp0 interface, so we manually configure the LAN IPv6 address (the delegated prefix) on the internal interface **br0**.
@@ Line 503: / Line 503: @@
 </file>
-Like for the IPv4, the **CLAMPMSS=Yes** is often required in **/etc/shorewall/shorewall.conf** (see above):
+If you want to forward packets from internal interface to the external one (and vice-versa), you need to enable IP forwarding in **/etc/shorewall6/shorewall6.conf**:
+<file>
+IP_FORWARDING=On
+</file>
+Like for the IPv4, the **CLAMPMSS=Yes** is often required in **/etc/shorewall6/shorewall6.conf** (see above):
 <file>