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samples: dns_resolve: Clarify documentation about DNS configuration

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Add clarification that the DNS server configuration must be edited in
the respective prj.conf file.

JIRA: ZEP-2040
Signed-off-by: Leandro Pereira <leandro.pereira@intel.com>
This commit is contained in:
Leandro Pereira 2017-06-01 15:12:57 -07:00 • committed by Anas Nashif
commit cb0f81f25f
1 changed files with 17 additions and 5 deletions
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22
samples/net/dns_resolve/README.rst
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@ -35,6 +35,7 @@ Requirements
Dnsmasq version 2.76 Copyright (c) 2000-2016 Simon Kelley
Wiring
******
@ -74,7 +75,6 @@ for example:
CONFIG_NET_APP_MY_IPV6_ADDR="2001:db8::1"
CONFIG_NET_APP_PEER_IPV6_ADDR="2001:db8::2"
are the IPv6 addresses for the DNS client running Zephyr and the DNS server,
respectively.
@ -88,7 +88,6 @@ The net-tools can be downloaded from
https://github.com/zephyrproject-rtos/net-tools
Open a terminal window and type:
.. code-block:: console
@ -96,8 +95,23 @@ Open a terminal window and type:
$ cd net-tools
$ ./dnsmasq.sh
('su' or 'sudo' may be required.)
NOTE: some systems may require root privileges to run dnsmaq, use sudo or su.
The default project configurations settings for this sample uses the public
Google DNS servers. In order to use the local dnsmasq server, please edit
the appropriate 'prj.conf' file and update the DNS server addresses. For
instance, if using the usual IP addresses assigned to testing, update them
to the following values:
.. code-block:: console
CONFIG_DNS_SERVER1="192.0.2.2:5353"
CONFIG_DNS_SERVER2="[2001:db8::2]:5353"
.. note::
DNS uses port 53 by default, but the dnsmasq.conf file provided by
net-tools uses port 5353 to allow executing the daemon without
superuser privileges.
If dnsmasq fails to start with an error like this:
@ -105,7 +119,6 @@ If dnsmasq fails to start with an error like this:
dnsmasq: failed to create listening socket for port 5353: Address already in use
Open a terminal window and type:
.. code-block:: console
@ -115,7 +128,6 @@ Open a terminal window and type:
Try to launch the dnsmasq application again.
QEMU x86
========