for glue records and forces the glue record to be reloaded from the real NS.
The 5% ttl reduction can cause the glue IN A to timeout before the NS
record in certain situations, such as when the domain owner does not match
up NS records with the NIC. This behavior by domain owners is becoming
more common as primary zone serving iterates through another glue level
(i.e. exodus hosts the master NS's but the customer then redirects the
NS's to the real DNS servers). The result is that named would appear to
work properly for about 40 minutes, and then unexpectedly fail for that
zone. This causes named to behave very inconsistently and a google search
shows that it has obviously frustrated many, many people. So until the bind
guys make named behave consistently (either fail instantly or accomodate the
case), we need to set this option to accomodate the case. The result
will be much more consistent behavior and fewer head-scratching failures.
MFC after: 3 days
now depends. This keeps named the same as before the import, that is: only
linking against libc dynamically, at a little space increase, which might
be due to the source code changes anyway. Very neglectable space
difference.
Some people might dub it a hack. It will do for now at least.
files. Mostly -I${.CURDIR} was needed -- especially for YACC generated
files as the new cpp does not look in the ultimate source file
(ie, the .y file)'s directory as told by the "#line" directive. Some were
misspellings of "-I${.CURDIR}" as "-I.".
libraries, so that `ld -f' in can create correct dependencies for
yet-to-be-built libraries.
Use `DIR!= cd ...libbind; make -V .OBJDIR' to find libbind's object dir
if it doesn't seem to be in its usual place relative to ${.OBJDIR}.
This fixes `cd /usr/src/usr.sbin/nslookup; mkdir obj; make'.
This will make a number of things easier in the future, as well as (finally!)
avoiding the Id-smashing problem which has plagued developers for so long.
Boy, I'm glad we're not using sup anymore. This update would have been
insane otherwise.
"." means the object directory, so it is just confusing to use it
when nothing is included from the object directory unless the object
directory is also the source directory. It is confusing for "."
not to mean the source directory anyway, so used `-I.'s should be
replaced by `-I${.OBJDIR}'.
There are some important bugfixes here, but nothing earth-shattering.
In particular, the Lame Delegation detection is massively sped up, meaning
that a lame server can be given up on in a few seconds, rather than taking
75 seconds. This will be a big win for large mailing list machines,
eg: freefall.
Note: this is a remote cvs import... Backups have been made.. :-)
Obtained from: Paul Vixie <paul@vix.com>
import of 4.9.3. This man page was produced by sed from the real version
before import, but I didn't have much choice.. This is needed to enable
the ndc target to complete a "make install"
