released in bursts after single fsync() events when the upper limit is
reached or if the receiving sockets go dry. The practical upshot is
that fsync-coupled server performance is now multiplicitively increased.
The default delayed ack limit is 28. Thanks entirely to a patch from
Christof Chen.
control lists. These directives may be used to assist in re-addressing
address pools without having to constantly reconfigure the server. Please
see 'man dhcpd.conf' for more information on allow/deny 'after time' syntax.
Thanks to a patch from Christof Chen. [ISC-Bugs #17110]
overflow that could result in a DoS (CVS 2007-0062). Also general
code tidying. [rt17090]
- Also fixed a spurious error message on the client. [rt17250]
boolean matches by regular expression (such as may be used in
class matching statements). Thanks to a patch by Alexandr S.
Agranovsky, which underwent slight modification. [ISC-Bugs #8155]
- Add -x option, which causes running dhclient processes to exist
gracefully *without* releasing leases [rt16741]
(Merging both at once because the first one depended on the second one)
This involved needing to look at more than one token at a time, so
this patch moves from read() to mmap() of files, as a way to gracefully
rewind.
See RT ticket #16516 for (a lot) more.
IPv6 address, or immediately if the -n flag is supplised.
[ISC-Bugs #16872]
- -q is now the default behaviour on dhclient, with -d or -v enabling
non-quiet (stderr logging) mode. [ISC-Bugs #16872]
determined from payload, because some NIC drivers return more data than
they actually recived; IP and UDP packets now stored in aligned data
structures; outgoing packet TTL increased from 16 to 128. [rt15583]
should send out option 81 (FQDN). Defaults to "on". If set to "off",
the FQDN option is not sent, even if the client requested it. This is
needed because some clients misbehave otherwise. [rt16624]
which is used to retain relay agent option contents from when the
client was in INIT or REBIND states. This should solve problems where
relay agent options were not echoed from the server, even when giaddr
was set. [ISC-Bugs #16787]
3.1.0a1's tables resulted in a reduction in default server memory use.
The new selected values provide more of a zero sum (increasing the size
of tables likely to be populated, decreasing the size of tables unlikely).
- Lease structures appear in three spearate hashes: by IP address, by UID,
and by hardware address. One type of table was used for all three, and
improvements to IP address hashing were applied to all three (so UID and
hardware addresses were treated like 4-byte integers). There are now two
types of tables, and the uid/hw hashes use functions more appropriate
to their needs.
- The max-lease-misbalance percentage no longer causes scheduled rebalance
runs to be skipped: it still governs the schedule, but every scheduled
run will attempt balance.
[ISC-Bugs #16396]
which causes the server to substantially reduce lease-times if there are
few (configured percentage) remaining leases. Thanks to a patch submitted
from Christof Chen. [ISC-Bugs #15409]
