Differences

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--- main_router [2022/07/18 18:11] – 2a06:4000:8073:19::2
+++ main_router [2022/08/08 15:24] (current) – [DHCPv6 configuration] bent
@@ Line 1: / Line 1: @@
 ====== Configuration files for the Main Router ======
-==== Network configuration ====
+===== Network configuration =====
-=== Upstream interface (enp0s6) ===
+==== Upstream interface (enp6s0) ====
-  Match]
+The upstream network interface is configured to act as a DHCP client (both IPv4 and IPv6). It also sets this host as a router and will accept Router Announcements (RA)
+  #/etc/systemd/network/enp6s0.network
+  #
+  [Match]
   Name=enp6s0
@@ Line 18: / Line 22: @@
   RouteMetric=100
-  [IPv6PrefixDelegation]
+====Downstream interface (br0)=====
+This interface sends Router Announcements (RA) on the LAN with the 'Managed' bit set. The interface itself gets static IPv4 and IPv6 addresses. Hosts on the LAN will use SLAAC and configure addresses as 2001:db8:8073:19::/64 (Sent as an option in the RA - Line 'SubnetID=19')
+  #/etc/systemd/network/br0.network
+  #
+  [Match]
+  Name=br0
+  [Network]
+  Address=192.168.19.1/24
+  DNS=192.168.19.5
+  IPForward=yes
+  IPv6SendRA=yes
+  IPv6PrefixDelegation=yes
+  Address=fe80::19/64
+  Address=2001:db8:8073:19::1/64
+  [Route]
+  Gateway=192.168.19.20
+  Destination=192.168.21.0/24
+  [IPv6SendRA]
   Managed=yes
+  RouterLifetimeSec=1800
+  [DHCPv6PrefixDelegation]
+  SubnetId=19
+==== DHCPv6 configuration ====
+Here is only shown the parts that are relevant for prefix delagation. The DHCP sections are omitted.
+  #/etc/dhcp/dhcpd6.conf
+  #
+  ...
+  # don't serve enp6s0 (WAN IF)
+  subnet6 2001:2db:8::8073/128 {
+  }
+  subnet6 2001:2db:8073:19::/64 {
+      # Range for clients
+      range6 2001:2db:8073:19::129 2001:2db:8073:19::254;
+      # Range for clients requesting a temporary address
+      range6 2001:2db:8073:19::/64 temporary;
+      # Additional options
+      option dhcp6.name-servers 2001:2db:8073:19::5;
+      # Prefix range for delegation to sub-routers
+      prefix6 2001:2db:8073:0100:: 2001:2db:8073:0f00:: /56;
+  }
+  ...