[dns-operations] tcp queries

Frank Denis frank at opendns.com
Tue Oct 16 03:27:54 UTC 2012


On Oct 15, 2012, at 8:22 PM, pangj <pangj at riseup.net> wrote:
> does it have the feature of answering back with truncate message? or just drop the packet when the limit is reached? thanks.

<<
	    There is a mechanism that can answer some legitimate
	    requests from a client whose address is being forged in a flood.
	    Setting <command>slip</command> to 2 (its default) causes every
	    other UDP request to be answered with a small response
	    claiming that the response would have been truncated.
	    The small size and relative infrequency of the response make
	    it unattractive for abuse of third parties.
	    <command>slip</command> must be between 0 and 10.
	    0 disables the mechanism.
>>

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