DNS
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... necessary to reduce latency by actively notifying servers of the
change. This is accomplished by the NOTIFY extension of the DNS
[NOTIFY].
...
... IXFR server may attempt to reply using UDP if the
entire response can be contained in a single DNS packet. If the UDP
reply does not fit, the query ...
... IXFR query packet format is the same as that of a normal DNS
query, but with the query type being IXFR and the authority ...
... versions, not all of which are
useful, are generated. For example, if multiple ftp servers share a
single DNS name and the IP address associated with the name is
changed once a minute to balance load between the ftp servers, it is
...
... Vixie, P., "DNS NOTIFY: A Mechanism for Prompt Notification of Zone Changes", RFC 1996prop, August 1996. ...
...
Though DNS is related to several security problems, no attempt is
made to fix them in this document.
...
...
This document is believed to introduce no additional security
problems to the current DNS protocol.
...