AdGuardHome/internal/dhcpd

Testing DHCP Server

Contents:

• Test setup with Virtual Box
• Quick test with DHCPTest

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

• DHCP test utility.

Quick test

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