Current issues with DNS Configuration Options for SLAAC

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Last updated 2012-12-16 (latest revision 2012-06-14)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


RFC 6106 specifies two Neighbor Discovery options that can be included in Router Advertisement messages to convey information about DNS recursive servers and DNS Search Lists. Small lifetime values for the aforementioned options have been found to cause interoperability problems in those network scenarios in which these options are used to convey DNS-related information. This document analyzes the aforementioned problem, and formally updates RFC 6106 such that these issues are mitigated.


Fernando Gont (
Pavel Simerda (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)