Prefix Delegation script error

(non-subscriber; please keep me in CC)

Greetings,

The sample PD script at (https://wiki.debian.org/IPv6PrefixDelegation)
indeed does delegate a prefix. However, the command stanza creates an
address whose valid_lft and preferred_lft are both forever. While the
bottom of the script suggests that it would update the address upon
prefix change, it never does. Basically, it forever kidnaps that
prefix and address.

Has anybody ever fixed this?

Thanks!
Martin-=C3=89ric