Resolver doesn't like 1.2.3.04 in /etc/hosts
Mark_Andrews at isc.org
Wed Oct 26 20:28:18 PDT 2005
> On 2005-10-26, Mark Andrews wrote:
> > Leading zeros are ambigious. Some platforms treat them as octal
> > others treat them as decimal.
> There is nothing ambiguous about the example provided. (Perhaps
> it wasn't a good example, but it's always a bug if '04' is not
> correctly decoded, regardless of the numeric base in use.)
You want a ambigious example?
Seen this sort of thing in real life when the admin wanted
to make the file look pretty and they wanted 12 for the last
octet not 10.
Seen boxes that used %03u.%03u.%03u.%03u to print out the
It's much easier to just reject octal and hexadecimal than
to work out when and when not it is ambigious. It is also
better to demand all 4 octets. It also generates less
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Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742 INTERNET: Mark_Andrews at isc.org
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