[LEDE-DEV] [PATCH 1/3] Remove ttl==255 restriction for queries

Philip Prindeville philipp_subx at redfish-solutions.com
Fri Sep 29 18:04:02 PDT 2017


> On Sep 29, 2017, at 3:49 AM, Matthias May <matthias.may at neratec.com> wrote:
> 
> The link from Philip Prindeville shows quite well why this removal was required:
> [quote]
> check-response-ttl= Takes a boolean value ("yes" or "no"). If set to "yes", an additional security check is activated:
> incoming IP packets will be ignored unless the IP TTL is 255. Earlier mDNS specifications required this check. Since
> this feature may be incompatible with newer implementations of mDNS it defaults to "no". On the other hand it provides
> extra security.
> [/quote]


Not actually my quote.

I think it was Christian.





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