AdGuardHome/internal/dhcpd
Ainar Garipov 25918e56fa Pull request 2100: v0.107.42-rc
Squashed commit of the following:

commit 284190f748345c7556e60b67f051ec5f6f080948
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date:   Wed Dec 6 19:36:00 2023 +0300

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config.go Pull request 2100: v0.107.42-rc 2023-12-07 17:23:00 +03:00
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db.go Pull request 2100: v0.107.42-rc 2023-12-07 17:23:00 +03:00
dhcpd.go Pull request 2100: v0.107.42-rc 2023-12-07 17:23:00 +03:00
dhcpd_unix_test.go Pull request 2100: v0.107.42-rc 2023-12-07 17:23:00 +03:00
http_unix.go Pull request 2100: v0.107.42-rc 2023-12-07 17:23:00 +03:00
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migrate.go Pull request 2100: v0.107.42-rc 2023-12-07 17:23:00 +03:00
migrate_internal_test.go Pull request 2100: v0.107.42-rc 2023-12-07 17:23:00 +03:00
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v4_unix.go Pull request 2100: v0.107.42-rc 2023-12-07 17:23:00 +03:00
v4_unix_test.go Pull request 2100: v0.107.42-rc 2023-12-07 17:23:00 +03:00
v6_unix.go Pull request 2100: v0.107.42-rc 2023-12-07 17:23:00 +03:00
v6_unix_test.go Pull request 2100: v0.107.42-rc 2023-12-07 17:23:00 +03:00
v46_windows.go Pull request 2100: v0.107.42-rc 2023-12-07 17:23:00 +03:00

Testing DHCP Server

Contents:

Test setup with Virtual Box

Prerequisites

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

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

Configure Virtual Box

  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 addresses 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
         local_domain_name: lan
         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 -v
    

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

    [info] DHCP: listening on 0.0.0.0:67
    

Quick test with DHCPTest utility

Prerequisites

Quick test

The DHCP server could be tested for DISCOVER-OFFER packets with in interactive mode.