$GENERATE and IPv6

[Mark Andrews]

In message <4A8BD747.6000302 at infracaninophile.co.uk>, Matthew Seaman writes:
> Is anyone out there using $GENERATE to create blocks of AAAA and PTR reco=
> rds
> for IPv6?  Particularly PTR records?
> 
> It seems easy enough to create AAAA records automatically:
> 
> $ORIGIN infracaninophile.co.uk.
> $GENERATE 0-255 2001-8b0-151-1-240-0-1234-${0,0,x} AAAA 2001:8b0:151:1:24=
> 0:0:1234:${0,0,x}
> 
> but how to create the corresponding PTR records?  Since the labels for=20
> =2Eip6.arpa records are single hex digits, then I'd have to have 16 $GENE=
> RATE
> lines to create 256 PTR records like so:
> 
> $ORIGIN 1.0.0.0.1.5.1.0.0.b.8.0.1.0.0.2.ip6.arpa.
> $GENERATE 0-15  ${0,0,x}.0.0.0.4.3.2.1.0.0.0.0.0.4.2.0 PTR 2001-8b0-151-1=
> -240-0-1234-${0,0,x}.infracaninophile.co.uk.
> $GENERATE 16-31 ${0,0,x}.1.0.0.4.3.2.1.0.0.0.0.0.4.2.0 PTR 2001-8b0-151-1=
> -240-0-1234-${0,0,x}.infracaninophile.co.uk.
> $GENERATE 32-47 ${0,0,x}.2.0.0.4.3.2.1.0.0.0.0.0.4.2.0 PTR 2001-8b0-151-1=
> -240-0-1234-${0,0,x}.infracaninophile.co.uk.
> etc...
> 
> which seems to pretty much obviate the point of using $GENERATE in the
> first place.  Other than writing a few scripts to generate the list
> records directly are there any alternatives?

See BIND 9.7.0a2.

2540.   [func]          Add a nibble mode to $GENERATE. [RT #18872]

Mind you I doubt if many people will use it.  A /64 is way to big
to pre-populate.  It would be much better to just let the reverse be
populated by the nodes themselves using TCP as a authenicator.  See
update-policy grant tcp-self.

Mark
 
> It would be handy if there was a format code eg 'P' that produced
> reverse order hex digits separated by '.' -- so eg ${0,4,P} would=20
> expand to something like
> 
> 0.0.0.0
> 1.0.0.0
> 2.0.0.0
> =2E..
> d.f.0.0
> e.f.0.0
> f.f.0.0
> 
> for the example above.  =20
> 
> 	Cheers,
> 
> 	Matthew
> 
> --=20
> Dr Matthew J Seaman MA, D.Phil.                       Flat 3
>                                                       7 Priory Courtyard
> PGP: http://www.infracaninophile.co.uk/pgpkey         Ramsgate
>                                                       Kent, CT11 9PW, UK
-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: marka at isc.org