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Setting up a DHCPv6 address pool
Last adaptation to the version: 12.6.0
New:
  • Updated to Redesign of the webinterface
notempty
This article refers to a Resellerpreview

12.5 12.4 11.7

Access: UTM-IP:Port or UTM-URL:Port
Port as configured at Network / Appliance Settings / Webserver
Default-Port: 11115
i.e.: https://utm.ttt-point.de:11115
Default: https://192.168.175.1:11115
Network Network configuration

DHCPv6

Network configuration UTMuser@firewall.name.fqdnNetwork UTM v12.6 DHCP Server IPv6 Pool eingerichtet-en.png Configured DHCPv6 pool

The DHCPv6 address pool setup is only slightly different from the DHCP setup with IPv4.

Basic knowledge of IPv6 can be found here.



Define IPv6 address on interface

Ethernet-Schnittstelle bearbeiten UTMuser@firewall.name.fqdnNetworkNetwork configuration UTM v12.6 DHCP Server IPv6 Netzwerkschnittstelle bearbeiten IP Adressen-en.pngSchnittstelle IP-Adresse hinzufügen First, an IPv6 address with subnet and the corresponding zones must be entered on the interface on which IPv6 is to be "spoken". This IP determines the range in which the DHCP pool is located:
Configuration at menu → Network →Network Configuration / edit Interfaces / Tab IP Addresses
An IP address can be entered directly in the click box, in this example »2001:DB8::1/64.



Setting up the DHCP Pool

Pool hinzufügen UTMuser@firewall.name.fqdnNetworkNetwork configuration UTM v12.6 DHCP Server IPv6 Pool einrichten Schritt 1-en.png
Der DHCPv6 Adresspool für dieses Subnetz wird unter Network Network Configuration  Area DHCP-Pools Button Pool hinzufügen eingerichtet.
In Schritt 1 muss eine eindeutiger Name für den Pool, sowie die Start- und Endardresse angegeben werden.
Der Name ist frei wählbar, Pool-Start- und Endadresse sind Adressen aus dem vorher definierten Subnetz.
Pool hinzufügen UTMuser@firewall.name.fqdnNetworkNetwork configuration UTM v12.6 DHCP Server IPv6 Pool einrichten Schritt 2-en.png
In step 2, enter the IPv6 address of the name server. In this example the UTM: 2001:DB8::1/---
Pool hinzufügen UTMuser@firewall.name.fqdnNetworkNetwork configuration UTM v12.6 DHCP Server IPv6 Pool einrichten Schritt 3-en.png
In step 3, Router Advertisement On must be enabled.

Finish the setup with the button Finish














Edit pool

Nachdem der Pool korrekt angelegt wurde, kann dieser mit bearbeitet werden.

Tab General
General
Changes to the pool range start and pool range end possible
Edit pool UTMuser@firewall.name.fqdnNetworkNetwork configuration UTM v12.6 DHCP Server IPv6 Pool bearbeiten Allgemein-en.pngPool bearbeiten - Allgemein
Tab Options
Options - DHCP Option
Option Option number Example parameters Comments UTM v12.6 DHCP Server IPv6 Pool bearbeiten Einstellungen-en.png
Router: 3 »2001:db8::1 Router as configured in Define IPv6 address on interface.
Domain name: 15 securepoint.local Name of the domain in which the DHCP leases are assigned
Domain name server: 5 »2001:db8::1 Name server as configured in step 2
Netbios name server: 44     NetBIOS over TCP/IP Name Server Option
SMTP-Server: 69     Simple Mail Transport Protocol (SMTP) Server Option
NTP Server: 41     Servers should be listed in order of preference.
Vendor Encapsulated Options: 43     Values must be given coded.
TFTP Server Name: 66 i.e.: profile.gigaset.net The IPv6 address, or hostname from the TFTP server
option tftp-server-name text;
  
Bootfile Name: 67 The name of the bootfile file
option bootfile-name text;
  
Default URL: 114 https://teamwork.gigaset.com/gigawiki/display/GPPPO/DHCP+option+114 Default URL
option default-url string;
  
VLAN ID: 132     The ID of the VLAN used
option vlan-id code 132 = text;
option vlan-id "128";
  
Next Server:notempty
New as of: v12.5
    The IPv6 address of the Next server
  • If the value is missing, TFTP may not work.
  • Default Lease Time: 51 600 Seconds Default validity period of the IP address if the client has not requested an explicit duration.
    Maximal Lease Time: 7200 Seconds Maximum validity period of the IP address in seconds that the client may receive when explicitly requested.
    Reject unknown clients: No If activated , an IP address is only assigned if there is a entry at Static DHCP tab for the MAC address of the client.
  • A client is also considered as known if there is an entry with an IP address from any other pool
    Example:

    Pool 1: 10.10.10.10 - 10.10.10.20 (Net on LAN3)
    Pool 2: 10.20.20.20 - 10.20.20.30 (Net on LAN4)
    Both pools with option Reject unknown clients
    Static IP 10.10.10.15 (from pool 1) for MAC address 01:23:45:67:89:AB
    Client with MAC address 01:23:45:67:89:AB receives at LAN3 always: 10.10.10.15

    Client with MAC address 01:23:45:67:89:AB receives at LAN4 e.g.: 10.20.20.21
      


  • DHCP Setup

    The Setup button opens a dialogue for the DHCP settings.

    Caption Value Description DHCP Setup UTMuser@firewall.name.fqdnNetworkNetwork configuration UTM v12.6 DHCP Server IPv6 Pool Einstellungen-en.pngDHCP Setup
    Ignore other SDHCP-Servers (IPv4): No If Yes is enabled, other DHCP servers for IPv4 are ignored.
    Ignore other SDHCP-Servers (IPv4): No If Yes is enabled, other DHCP servers for IPv6 are ignored.



    Static DHCP

    If hosts are to be assigned predefined IP addresses ( fixed IPs bound to the MAC address, but assigned by the UTM), these IPs can be reserved with static leases:
    Configuration under → Network →Network ConfigurationTab Static DHCP Button Add Lease

    Host: Hostname Meaningful host name Lease hinzufügen UTMuser@firewall.name.fqdnNetworkNetwork configuration UTM v12.6 DHCP Server IPv6 statisches DHCP hinzufuegen-en.pngDialogue Add lease
    Ethernet: 00:00:00:00:00:00 MAC address of the host
    IP: 2001:db8::a1/---  IP address to be reserved exclusively for this host
    Saves and takes over the lease
    notempty
    Important: Leases must necessarily be in an existing DHCP pool!
    Network configuration UTMuser@firewall.name.fqdnNetwork UTM v12.6 DHCP Server IPv6 statisches DHCP Uebersicht-en.pngOverview static DHCP leases
    notempty
    Joint use of static and dynamic IP addresses within a pool is possible.



    Static leases outside a pool

    Existing static leases that are not within a DHCP pool must be changed!

    If such leases are detected after an update, a message is displayed prompting to adjust the DHCP settings.
    It ist now possible that either

    • the leases are adapted and relocated in existing pools
      or
    • additional DHCP pools are created that contain static leases
      or
    • existing DHCP pools are extended so that they include static leases
    UTM v12.6 DHCP Server IPv6 DHCP Warnung-en.png
    Warning at login

    Widget

    In the administrator interface of the UTM, there is a DHCP widget that provides an overview of the existing DHCP connections.
    Further information can be found in the Wiki article UTM Widgets.