Updates to eir fibre broadband IPv6 support

Delegated Prefix lease persistency enhanced

To help prevent changes to the Delegated Prefix assigned to a requesting DHCPv6 client the DHCPv6 server now remembers the lease for 15 minutes after the lease has timed out. The server also remembers the lease even when the client sends a solicited-release for it. This lets the router be reconfigured without losing its lease.

Leases are bound to the MAC address of the requesting router's WAN interface. If the router's WAN interface MAC changes a different Delegated Prefix will be assigned. A typical example of when this occurs is a router swap. If a different Delegated Prefix is desired; turn the client router off for 75 minutes so that the lease also times out at the DHCPv6 server.

F2000 firmware update B050

This minor update began rolling out in mid August 2018. It improves the reliability of the IPv6 connection. Specifically B050 fixes a bug in the DHCPv6 client which can occur if the WAN link goes down and comes back up again. The bug prevents the client renewing its lease for the delegated prefix after the original lease period has expired. The bug also causes the F2000 to incorrectly still advertise the /64 on its LAN interface from the timed out lease.

Static /48 Delegated Prefix bound to the eir fibre broadband link

Static IP address support (typically used on Business connections) is now also an option for IPv6. A /48 Delegated Prefix can be assigned to the link. A requesting router on the link will then get the same prefix even if the router is swapped or the router is turned off or disconnected for longer than the lease period. Fixed /48 Delegated Prefixes cannot be moved between different broadband links.

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