[Kea-users] what does ach dhcpv4 hook point/parameter mean ?

[luckydog xf]

Greetings, everyone,

 I'm running External Hook Scripts now. From
https://kea.readthedocs.io/en/kea-2.6.0/arm/hooks.html there are the
following hook points.
---
The dhcpv4 hook points:
lease4_renew
lease4_expire
lease4_recover
leases4_committed
lease4_release
lease4_decline

According to several rounds tests, in the beginning, when the client
requests an IP, only leases4_committed is called, only LEASES4_AT0_HOSTNAME
and LEASES4_AT0_ADDRESS  have values. Later on, if it's going to renew that
IP, leases4_committed  and  lease4_renew(LEASE4_ADDRESS and LEASE4_HOSTNAME
have values, too) are called together and sequentially.


It does not make sense why leases4_committed   is called first and then
lease4_renew. I think lease4_renew is sufficient.

So what do these points mean? in other words, which stage in DHCP are they
called? And what do these parameters stand for?

Thanks.
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