nsupdate to clear MX records REFUSED when current mx rec is invalid

[Mark Andrews]

> Mark Andrews wrote:
> > There is a test with the wrong sence add vs delete.  It's supposed
> > to stop MX records being added without address records and it is
> > instead stopping them being deleted.
> > 
> > Set "check-integrity no;" in named.conf to work around this.
> >
> 
> That took care of it, Mark. Thanks. I will look at adding the patch
> shortly.
> 
> >> // Update add seems to work fine.
> >>
> >> ] nsupdate delete example.com MX
> >> ] send
> >> update failed: REFUSED
> >>
> >> // When trying to delete the unresolvable MX record, bind refuses.
> >>
> >> ] quit
> >> mem.c:866: INSIST((((ctx->pools).head == ((void *)0)) ? isc_boolean_true
> >> : isc_boolean_false)) failed.
> >>
> >> // Probably unrelated, but I get that INSIST failure on exit.
> 
> Any idea on that mem.c INSIST? It seems it only happens if I give
> nsupdate a blank line at some point, with no associated action.

	It's a known issue, fixed in BIND 9.4.2.

> It
> doesn't seem to cause any problems here, so no big deal. But it seems
> like it should probably get closed up. Is there a place I can file it as
> (low priority) bug? Er... just realized it could be due to the -O3
> CFLAGS. I'll recompile without that when I do the patch.
> 
> Thanks again.
> 
> Examples:
> 
> # nsupdate -y ...
> ] quit
> // no error
> 
> # nsupdate -y ...
> ]
> ] quit
> mem.c:866: INSIST((((ctx->pools).head == ((void *)0)) ? isc_boolean_true
> : isc_boolean_false)) failed.
> Aborted
> 
> # nsupdate -y ...
> ] server 127.0.0.1
> ] update add test2.example.com. 120 A 10.1.1.1
> ]
> ] quit
> // no error
> 
> # nsupdate -y ...
> ]
> ] server 127.0.0.1
> ] update add test2.example.com. 120 A 10.1.1.1
> ]
> ] quit
> mem.c:866: INSIST((((ctx->pools).head == ((void *)0)) ? isc_boolean_true
> : isc_boolean_false)) failed.
> Aborted
> 
> 
> >>
> >> ==
> >>
> >> Bind 9.4.1-P1, RHEL4, From source:
> >>  ./configure --prefix=/usr --sysconfdir=/etc --localstatedir=/var
> >>    --mandir=/usr/share/man -with-openssl=/usr/include/openssl
> >>    --with-libtool --disable-ipv6 --enable-threads CFLAGS=-O3
> >>    -funroll-loops -fomit-frame-pointer
> >>
> >>
> 
> 
-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: Mark_Andrews at isc.org