Pull request: DHCP: imp markup, opt docs
Merge in DNS/adguard-home-wiki from imp-opt to master
Squashed commit of the following:
commit 9ddad2fb3a1dd72dc0306eb3ef00fed41e813b98
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date: Fri Oct 8 19:07:27 2021 +0300
DHCP: imp wording
commit 1baf136849127585fb7d87ef21ff72224aadd570
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date: Fri Oct 8 18:51:08 2021 +0300
DHCP: imp markup, opt docs
Ainar Garipov
parent
713163fe91
commit
1a8843345e
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@ -82,7 +82,7 @@ Examples:
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* `[/example.local/]1.1.1.1`: DNS upstream for specific domains, see below.
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### <a hfer="#upstreams-for-domains" id="upstreams-for-domains" name="upstreams-for-domains">Specifying Upstreams For Domains</a>
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### <a href="#upstreams-for-domains" id="upstreams-for-domains" name="upstreams-for-domains">Specifying Upstreams For Domains</a>
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You can specify upstreams that will be used for specific domains using the
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dnsmasq-like syntax (see the documentation for the option `--server`
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104
DHCP.md
104
DHCP.md
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@ -7,96 +7,112 @@
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* [DHCPv6 Options](#config-6)
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* [Automatic Hosts](#autohosts)
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*AdGuard Home* can be used as a DHCP server. This page describes how to do that.
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AdGuard Home can be used as a DHCP server. This page describes how to do that.
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## <a id="prereq" href="#prereq">Prerequisites</a>
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1. Make sure that you run an OS on which *AdGuard Home* supports DHCP. We
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currently don't support DHCP on *Windows*.
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1. Make sure that you run an OS on which AdGuard Home supports DHCP. We
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currently don't support DHCP on Windows.
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1. Make sure that your machine has a static IP address.
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## <a id="default" href="#default">Default Options</a>
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By default, *AdGuard Home* will set itself as the DNS server for the DHCP
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clients. The default lease time is 24 hours.
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By default, AdGuard Home will set itself as the DNS server for the DHCP clients.
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The default lease time is 24 hours.
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## <a id="config" href="#config">Configuration</a>
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See the DHCP section in the [configuration] article for the overview of the DHCP
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configuration options. There are several configuration parameters for DHCP that
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can't be set via the *AdGuard Home* administrator dashboard. Those are
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described below.
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can't be set via the AdGuard Home administrator dashboard. Those are described
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below.
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### <a id="config-4" href="#config-4">The `dhcp.dhcpv4.options` Array Field</a>
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The `options` field accepts two types of values: `hex` and `ip`. Both start
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with the `CODE`, which MUST be an integer in the [1, 255] range.
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The `options` field accepts four types of values: `hex`, `ip`, `ips`, and
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`text`. They all start with the `CODE`, which MUST be an integer in the [1,
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255] range. See also [RFC 2132, sec. 3][rfc-2132].
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See [RFC 2132, sec. 3](https://tools.ietf.org/html/rfc2132#section-3).
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In accordance with [RFC 2131, sec. 4.3.1][rfc-2131], these options override the
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default options set by Adguard Home. Which means that if you want to set DNS
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server addresses using option `6`, you should also add Adguard Home's own
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addresses there. Otherwise, AdGuard Home's filtering won't work for the DHCP
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clients who receive these DNS server addresses.
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The `hex` format is:
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* The `hex` format is:
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```
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CODE hex HEX_VALUE
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```
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```
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CODE hex HEX_VALUE
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```
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For example, to set option `6`, the DNS server, to two IP addresses, `1.2.3.4`
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and `1.2.3.5`, use:
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For example, to set option `6`, the DNS server, to two IP addresses,
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`1.2.3.4` and `1.2.3.5`, use:
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```yaml
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# …
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'dhcp':
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```yaml
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# …
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'dhcp':
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# …
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'dhcpv4':
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# …
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'options':
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- '6 hex 0102030401020305'
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```
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```
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The `ip` format is:
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* The `ip` format is:
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```
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CODE ip IPV4_VALUE
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```
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```
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CODE ip IPV4_VALUE
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```
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For example, to set option `6`, the DNS server, to one IP address, `1.2.3.4`,
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use:
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For example, to set option `6`, the DNS server, to one IP address,
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`1.2.3.4`, use:
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```yaml
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# …
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'dhcp':
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```yaml
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# …
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'dhcp':
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# …
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'dhcpv4':
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# …
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'options':
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- '6 ip 1.2.3.4'
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```
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```
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The `ips` format (since **v0.106.0**) is the same, but with comma-separated
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IP-addresses:
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* The `ips` format (since **v0.106.0**) is the same, but with comma-separated
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IP-addresses:
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```yaml
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# …
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'dhcp':
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```yaml
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# …
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'dhcp':
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# …
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'dhcpv4':
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# …
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'options':
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- '6 ips 1.2.3.4,5.6.7.8'
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```
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```
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The `text` format (since **v0.106.0**) allows you to put arbitrary UTF-8 text as
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the option data. For example:
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* The `text` format (since **v0.106.0**) allows you to put arbitrary UTF-8
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text as the option data. For example:
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```yaml
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# …
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'dhcp':
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```yaml
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# …
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'dhcp':
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# …
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'dhcpv4':
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# …
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'options':
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- '252 text http://example.com'
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```
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```
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### <a id="config-6" href="#config-6">DHCPv6 Options</a>
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@ -107,6 +123,10 @@ The option `dhcp.dhcpv6.ra_allow_slaac`, if `true`, sends RA packets allowing
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the clients to choose between SLAAC and DHCPv6.
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[configuration]: https://github.com/AdguardTeam/AdGuardHome/wiki/Configuration
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[rfc-2131]: https://tools.ietf.org/html/rfc2131#page-29
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[rfc-2132]: https://tools.ietf.org/html/rfc2132#section-3
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## <a id="autohosts" href="#autohosts">Automatic Hosts</a>
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@ -75,7 +75,7 @@ work. -->
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and alike) for a host is basically the same as blocking that host.
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```none
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# Returns the IP address 1.2.3.4 for exmaple.org.
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# Returns the IP address 1.2.3.4 for example.org.
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1.2.3.4 example.org
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# Blocks example.com by responding with 0.0.0.0.
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0.0.0.0 example.com
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