Eugene Burkov bdcf345155 Pull request: 4745 Fix DHCP hostnames
Merge in DNS/adguard-home from 4745-fix-dhcp-hostnames to master

Closes #4745.

Squashed commit of the following:

commit fe03c8eda6c8ee35a10eb5f5a8e4d4d0c7373246
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Tue Aug 23 18:16:16 2022 +0300

    dhcpd: imp code, naming

commit 7a7129268917d99ba16781b7f2e9bfb7ae84ff3e
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Tue Aug 23 18:10:12 2022 +0300

    dhcpd: add tests

commit bb14a4a62df1eed6492d30f622c3e22da9a6f4be
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Tue Aug 23 14:58:29 2022 +0300

    dhcpd: imp code, docs

commit 2ada39f994cb9dbb2208d47a588eb72056bb5306
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Tue Aug 23 14:44:35 2022 +0300

    all: log changes

commit cbd3ed254865921be09376097dac9f5926b2349a
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Tue Aug 23 14:40:54 2022 +0300

    dhcpd: imp option 81

commit 64dabb52560f5edc08f17aadaa43172a5d74463d
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Tue Aug 23 14:10:15 2022 +0300

    dhcpd: fix empty hostname in static lease

commit 0df5d10d0d94863b9bbab28129bcc3436fb71222
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Tue Aug 23 13:34:31 2022 +0300

    dhcpd: report dupl hostnames of static lease
2022-08-23 18:22:49 +03:00
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2021-06-16 16:48:46 +03:00
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2021-08-12 17:33:53 +03:00
2021-10-22 11:58:18 +03:00
2021-10-22 11:58:18 +03:00
2022-08-23 18:22:49 +03:00
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2021-08-12 17:33:53 +03:00

DHCP server

Contents:

Test setup with Virtual Box

To set up a test environment for DHCP server you need:

  • Linux host machine
  • Virtual Box
  • Virtual machine (guest OS doesn't matter)

Configure client

  1. Install Virtual Box and run the following command to create a Host-Only network:

     $ VBoxManage hostonlyif create
    

    You can check its status by ip a command.

    You can also set up Host-Only network using Virtual Box menu:

     File -> Host Network Manager...
    
  2. Create your virtual machine and set up its network:

     VM Settings -> Network -> Host-only Adapter
    
  3. Start your VM, install an OS. Configure your network interface to use DHCP and the OS should ask for a IP address from our DHCP server.

  4. To see the current IP address on client OS you can use ip a command on Linux or ipconfig on Windows.

  5. To force the client OS to request an IP from DHCP server again, you can use dhclient on Linux or ipconfig /release on Windows.

Configure server

  1. Edit server configuration file 'AdGuardHome.yaml', for example:

     dhcp:
       enabled: true
       interface_name: vboxnet0
       dhcpv4:
         gateway_ip: 192.168.56.1
         subnet_mask: 255.255.255.0
         range_start: 192.168.56.2
         range_end: 192.168.56.2
         lease_duration: 86400
         icmp_timeout_msec: 1000
         options: []
       dhcpv6:
         range_start: 2001::1
         lease_duration: 86400
         ra_slaac_only: false
         ra_allow_slaac: false
    
  2. Start the server

     ./AdGuardHome
    

    There should be a message in log which shows that DHCP server is ready:

     [info] DHCP: listening on 0.0.0.0:67