remove unneeded image

[skm-ma-ws1314.git] / sec-dns-extensions.tex

diff --git a/sec-dns-extensions.tex b/sec-dns-extensions.tex
index e266ba6..93921fd 100644 (file)
--- a/sec-dns-extensions.tex
+++ b/sec-dns-extensions.tex
@@ -15,12 +15,12 @@ group\footnote{\url{http://zeroconf.org}}.
 \term{Multicast DNS} (mDNS)~\cite{rfc6762} describes an extension to the Domain
 Name System that allows DNS resource records to be distributed on multiple hosts
 in a network, therefore avoiding central authorities and enabling every host to
-publish its own entries. For that purpose, a special domain, usually
-named \code{.local}, is used.
+publish its own entries. For that purpose, a special top-level domain, is used,
+usually named \code{.local}, which contains those entries.
 
 Software that supports mDNS listens on the reserved
 link-local multicast address \code{224.0.0.251} (for IPv4 queries) or
-\code{FF02::FB} (for IPv6 queries) on UDP port 5353 for incoming queries.
+\code{ff02::fb} (for IPv6 queries) on UDP port 5353 for incoming queries.
 Queries sent to those multicast address and port are standard DNS queries.
 If a host receives a query and knows about the queried resource, it responds to the
 querying host with a standard DNS response. The querying host can then simply
@@ -32,7 +32,7 @@ next section).
 Another feature of Multicast DNS is the reduction of traffic through
 \term{Known-Answer Suppression}. It allows a querying host to specify already
 known resources in its query when querying resources that could exist on more
-than one host (e.~g., SRV records). The hosts matching those resources then do
+than one host (e.\,g., SRV records). The hosts matching those resources then do
 not generate a response, thus reducing the messages in the network and saving
 bandwidth, which is usually a scarce resource in wireless networks.