AdGuardHome/internal/dhcpd
Eugene Burkov 94cf50a53d Pull request 1955: Upd libraries
Merge in DNS/adguard-home from upd-libs to master

Squashed commit of the following:

commit 72f4fb7d5ab8eaecb917a843dec56e3fa38b725c
Merge: 8defe106f 111005b8d
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Thu Aug 10 19:50:33 2023 +0300

    Merge branch 'master' into upd-libs

commit 8defe106fc982ba916f42d5722f1cc0152042d04
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Thu Aug 10 19:38:01 2023 +0300

    dnsforward: revert behavior

commit 8ccb2f675373772f8a6f829b80b317fda0c5f730
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Wed Aug 9 18:35:12 2023 +0300

    all: imp code

commit a3112d3438a466bae515e56a6ee97394066ba481
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Wed Aug 9 17:26:52 2023 +0300

    filtering: revert type

commit 56d2528fb4c8ee5504de0c6ec24050d63c8e6330
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Wed Aug 9 14:57:04 2023 +0300

    stats: fix sort

commit 0dbb446602b7536df508a8e53c4a532455c9d064
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Wed Aug 9 14:52:28 2023 +0300

    all: upd golibs & dnsproxy
2023-08-10 20:00:17 +03:00
..
bitset.go
bitset_test.go
broadcast_bsd.go
broadcast_bsd_test.go
broadcast_others.go
broadcast_others_test.go
config.go
conn_bsd.go
conn_bsd_internal_test.go
conn_linux.go
conn_linux_internal_test.go
db.go
dhcpd.go
dhcpd_unix_test.go
http_unix.go
http_unix_test.go
http_windows.go
http_windows_test.go
iprange.go
iprange_test.go
migrate.go
migrate_internal_test.go
options_unix.go
options_unix_test.go
README.md
routeradv.go
routeradv_test.go
v4_unix.go
v4_unix_test.go
v6_unix.go
v6_unix_test.go
v46_windows.go

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.