![]() First up, configure the IPv4 instance of the DHCP server. On recent versions of FreeBSD, the isc-dhcpd-server package installs two rc scripts, which are used to run the two instances of the daemon we’ll have to run. It's a 14 byte long identifier, starting with a 2 byte length information (usually ”0x000e”): # hexdump -e '"%07. At present, the ISC DHCP daemon can’t run in both IPv4 and IPv6 modes simultaneously. Note that the ”dhcp.client-id” no longer belongs to a MAC address, an unique ID is used instead! ”dhcp6c” (see above) uses the file /var/lib/dhcpv6/dhcp6c_duid (would be created during first start, if not existing) as unique identity. # Prefix range for delegation to sub-routers ![]() Option dhcp6.domain-search "domain.example" # Range for clients requesting a temporary address the IPv6 address is announced by DHCP server to the. the DHCPv6 server checks the DUID with the DHCPv6 database for reservation or pool. Range6 2001:db8:0:1::129 2001:db8:0:1::254 On a high-level overview, DHCPv6 uses UDP Port 546 for the client and UDP Port 547 for the server and follows these simple steps: the DHCP Unique Identifier (DUID) is sent by the client to request an address. ![]() Note, that the router requires to have a interface configured with an IPv6 address out of the defined subnet. Create a dedicated configuration file /etc/dhcp/nf for the IPv6 part of the dhcpd.
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