Multi-homing APNs in GPRS/UMTS

[Barry Margolin]

In article <ca7stv$22ub$1 at sf1.isc.org>, Paul Vixie <vixie at sa.vix.com> 
wrote:

> I believe that a DNS TTL of zero is well specified, though ill-advised.

IIRC, BIND 4.8 (which was at one time the most common BIND release on 
the Internet, and is probably still in heavy use) had some problems with 
zero TTLs.  I remember when we were first starting to use Cisco 
Distribute Directors there were some sites that had trouble accessing 
the sites whose DNS was being hosted on them.  The problems went away 
when we reconfigured the DD's to use TTL=1.

-- 
Barry Margolin, barmar at alum.mit.edu
Arlington, MA
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