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Merge branch 'edns0'

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Conflicts:
	CHANGELOG
	src/dnsmasq.h
	src/option.c
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Simon Kelley
2013-10-11 10:25:56 +01:00
parent 8584c502d3 f65b0e546b
commit 6bd3a09fb8
8 changed files with 259 additions and 82 deletions
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man/dnsmasq.8
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@@ -543,7 +543,20 @@ server. The MAC address can only be added if the requestor is on the same
subnet as the dnsmasq server. Note that the mechanism used to achieve this (an EDNS0 option)
is not yet standardised, so this should be considered
experimental. Also note that exposing MAC addresses in this way may
have security and privacy implications.
have security and privacy implications. The warning about caching
given for --add-subnet applies to --add-mac too.
.TP
.B --add-subnet[[=<IPv4 prefix length>],<IPv6 prefix length>]
Add the subnet address of the requestor to the DNS queries which are
forwarded upstream. The amount of the address forwarded depends on the
prefix length parameter: 32 (128 for IPv6) forwards the whole address,
zero forwards none of it but still marks the request so that no
upstream nameserver will add client address information either. The
default is zero for both IPv4 and IPv6. Note that upstream nameservers
may be configured to return different results based on this
information, but the dnsmasq cache does not take account. If a dnsmasq
instance is configured such that different results may be encountered,
caching should be disabled.
.TP
.B \-c, --cache-size=<cachesize>
Set the size of dnsmasq's cache. The default is 150 names. Setting the cache size to zero disables caching.