What is System delegated prefix?
The prefix delegation feature lets a DHCP server assign prefixes chosen from a global pool to DHCP clients. It will then send router advertisements including the prefix, allowing other devices to use autoconfiguration to configure their own IPv6 addresses.
What is an IPv6 prefix used for?
IPv6 Prefix Length is used to identify how many bits of a Gobal Unicast IPv6 Address are there in network part. For example, in 2001:0DB8:0000:000b::/64, the number 64 is used to identify that the first 64 bits are in network part.
Should I use IPv6?
IPv6 is extremely important for the long-term health of the Internet. Switching from IPv4 to IPv6 will give the Internet a much larger pool of IP addresses. It should also allow every device to have its own public IP address, rather than be hidden behind a NAT router.
How is IPv6 range defined?
How to calculate an IPv6 CIDR range
- Find the common prefix – that is, the string of digits shared by all of your addresses.
- Expand the common prefix completely (including redundant zeros), and multiply the total number of digits by 4 – that’s the size of your common prefix.
How does DHCPv6 Prefix delegation work with IPv6?
With the prefix delegation feature and DHCPv6, it automatically assigns prefixes to its customers: Each customer router configures an IPv6 address based on the prefix they received from the ISP using the general prefix feature and advertises the specific prefix (subnet) to host devices in router advertisements.
When to assign an IPv6 prefix to a CPE?
In the case of a router connecting to a network that is capable of issuing a DHCPv6-PD request, the IPv6 prefix delegation process is started and an IPv6 prefix is assigned to the CPE. This method is most probably the safer one, covering most of the scenarios regardless of underlying technologies, and is the one most used by operators.
How does ipv6prefixdelegation-debian wiki?
It will remove an old prefix after it expired, generate an interface address with a newly learned prefix and assign that address to the interface specified in the variable IA_PD_IFACE (see line 12 of the script). In addition, it can restart or reload services after a prefix change (e.g. your firewall).
What does persistent assignment in DHCPv6 mean?
Persistent assignment means that a prefix is assigned to a customer (typically by means of an AAA, which may be dependent on DHCPv6 and/or other provisioning systems) and that prefix will always remain the same regardless of how many times the customer (re)connects or renews the lease.