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[master] clarify edns-udp-size doc

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This commit is contained in:
Evan Hunt 2015-02-03 13:35:34 -08:00
parent e3e783a0e9
commit 7267d1f335
1 changed files with 10 additions and 2 deletions
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12
doc/arm/Bv9ARM-book.xml
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@ -8980,7 +8980,7 @@ avoid-v6-udp-ports { 40000; range 50000 60000; };
<term><command>edns-udp-size</command></term>
<listitem>
<para>
Sets the initial advertised EDNS UDP buffer size in
Sets the maximum advertised EDNS UDP buffer size in
bytes, to control the size of packets received from
authoritative servers in response to recursive queries.
Valid values are 512 to 4096 (values outside this range
@ -10639,7 +10639,15 @@ example.com CNAME rpz-tcp-only.
is useful when you wish to advertise a different value
to this server than the value you advertise globally,
for example, when there is a firewall at the remote
site that is blocking large replies.
site that is blocking large replies. (Note: Currently,
this sets a single UDP size for all packets sent to the
server; <command>named</command> will not deviate from
this value. This differs from the behavior of
<command>edns-udp-size</command> in <command>options</command>
or <command>view</command> statements, where it specifies
a maximum value. The <command>server</command> statement
behavior may be brought into conformance with the
<command>options/view</command> behavior in future releases.)
</para>
<para>