[SURBL-Discuss] Re: URI BL responses, always loopback network?

Ron Guerin ron at vnetworx.net
Wed Aug 6 03:13:53 CEST 2008


Frank Ellermann wrote:
> Jeff Chan wrote:
> 
>> Draft documents notwithstanding, in actual practice most
>> blacklists use only the fourth octet.  A few vary the
>> second and third octets, but they are exceptional.
> 
> OPM was an exception, with a magic "1" as second octet.
> 
> I never found out if that is a "version number" for the
> specification of the remaining 16 bits, just a trick to
> avoid 127.0.0.0/31, or something else.
> 
> "Extend to 16 bits" is a straight forward idea, and one
> Jeff Chan proposed it on this list some years ago... :-)  
> 
> IIRC the "isipp" codes (mostly white lists) use rather
> convoluted 127/8 meanings.

This is why I asked here on SURBL-discuss.  I'm under the impression 
this is the place where the rubber meets the road.

- Ron


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