Add support to set high and low thresholds for pools for
v4 and v6. A message will be emitted when the usage of
the pool first exceeds the high threshold. More messages
will be skipped until the usage has gone below the low
threshold and then back above the high threshold.
Emit a log message when the server had completed initialization
and is about to start dispatching. And emit log messages when
both peers in a failover pair have reached the normal state.
[rt27912]
Add code to suppor on {commit expiry release} statements for DHCPv6.
There are several pieces to this change
1) Add space in the iasubopt structure to hold the statement pointers
2) Update the execute code to fill in the structures as necessary
3) Execute the statements when appropriate
Many of the changes in the non-v6 code are to pass the v6 structures
around to the execute code.
Modify the renew_lease6() code to properly handle a lease time
that is reduced rather than extended.
Fix the ATF tests for mdb6 and add a new test to check the
above condition.
When processing an IA that we've seen check to see if the
addresses are usable (not in use by somebody else) before
handing it out.
When reading in leases from the file discard expired addresses.
When picking an address for a client include the IA ID in
addition to the client ID to generally pick different addresses
for different IAs.
[ISC-Bugs #23138] [ISC-Bugs #27945] [ISC-Bugs #25586]
[ISC-Bugs #27684]
should be cancelled. This patch results in cancelling the
outstanding request less often. It fixes the problem caused
by a client doing a release where the txt and ptr records
weren't removed from the DNS.
[ISC-BUGS #27858]
code to the DDNS handling. This code included a bug that caused it
to attempt to dereference a NULL pointer and eventually segfault.
While reviewing the code as we addressed this problem, we determined
that some of the updates to the lease structures would not work as
planned since the structures being updated were in the process of
being freed: these updates were removed. In addition we removed an
incorrect call to the DDNS removal function that could cause a failure
during the removal of DDNS information from the DNS server.
Thanks to Jasper Jongmans for reporting this issue.
[ISC-Bugs #27078]
CVE: CVE-2011-4868
an address that is tagged as abondened (meaning we received a
decline request for it previously) don't attempt to move it from
the inactive to active pool as doing so can result in the server
crshing on an assert failure. Also retag the lease as active
and reset it's timeout value.
[ISC-Bugs #21921]
follow the leases through their lifecycles. This enables DDNS teardowns
on leases that are assigned and expired inbetween a server restart (the
state is recovered from dhcpd.leases). Arbitrary user-specified binding
scopes ('set var = "value";') are not yet supported.
