Documentation improvements for dns64 plugin (#3777)

Minor typo and improvements to the dns64 plugin README.
Signed-off-by: Ben Kochie <superq@gmail.com>

man/coredns-dns64.7

 .\" Generated by Mmark Markdown Processer - mmark.miek.nl
-.TH "COREDNS-DNS64" 7 "January 2020" "CoreDNS" "CoreDNS Plugins"
+.TH "COREDNS-DNS64" 7 "March 2020" "CoreDNS" "CoreDNS Plugins"
 
 .SH "NAME"
 .PP
@@ -21,6 +21,10 @@ A records, synthesizes the AAAA records from the A records.
 .PP
 The synthesis in only performed if the query came in via IPv6.
 
+.PP
+This translation is for IPv6-only networks that have NAT64
+\[la]https://en.wikipedia.org/wiki/NAT64\[ra].
+
 .PP
 See RFC 6147
 \[la]https://tools.ietf.org/html/rfc6147\[ra] for more information.
@@ -31,21 +35,21 @@ See RFC 6147
 
 .nf
 dns64 [PREFIX] {
-  [translate\\\_all]
+  [translate\_all]
 }
 
 .fi
 .RE
 
 .IP \(bu 4
-[PREFIX] defines a custom prefix instead of the default \fB\fC64:ff9b::/96\fR
+[PREFIX] defines a custom prefix instead of the default \fB\fC64:ff9b::/96\fR.
 .IP \(bu 4
 \fB\fCtranslate_all\fR translates all queries, including respones that have AAAA results.
 
 
 .SH "EXAMPLES"
 .PP
-Translate with the default well known prefix. Applies to all queries
+Translate with the default well known prefix. Applies to all queries.
 
 .PP
 .RS
@@ -57,7 +61,7 @@ dns64
 .RE
 
 .PP
-Use a custom prefix
+Use a custom prefix.
 
 .PP
 .RS
@@ -72,7 +76,7 @@ dns64 {
 .RE
 
 .PP
-Enable translation even if an existing AAAA record is present
+Enable translation even if an existing AAAA record is present.
 
 .PP
 .RS
@@ -100,6 +104,7 @@ Resolve PTR records
 .IP \(bu 4
 Follow CNAME records
 .IP \(bu 4
-Make resolver DNSSEC aware
+Make resolver DNSSEC aware. See: RFC 6147 Section 3
+\[la]https://tools.ietf.org/html/rfc6147#section-3\[ra]
 
 

plugin/dns64/README.md

@@ -13,28 +13,30 @@ From Wikipedia:
 
 The synthesis in only performed if the query came in via IPv6.
 
+This translation is for IPv6-only networks that have [NAT64](https://en.wikipedia.org/wiki/NAT64).
+
 See [RFC 6147](https://tools.ietf.org/html/rfc6147) for more information.
 
 ## Syntax
 
 ~~~
 dns64 [PREFIX] {
-  [translate\_all]
+  [translate_all]
 }
 ~~~
 
-* [PREFIX] defines a custom prefix instead of the default `64:ff9b::/96`
+* [PREFIX] defines a custom prefix instead of the default `64:ff9b::/96`.
 * `translate_all` translates all queries, including respones that have AAAA results.
 
 ## Examples
 
-Translate with the default well known prefix. Applies to all queries
+Translate with the default well known prefix. Applies to all queries.
 
 ~~~
 dns64
 ~~~
 
-Use a custom prefix
+Use a custom prefix.
 
 ~~~
 dns64 64:1337::/96
@@ -44,7 +46,7 @@ dns64 {
 }
 ~~~
 
-Enable translation even if an existing AAAA record is present
+Enable translation even if an existing AAAA record is present.
 
 ~~~
 dns64 {