AdGuardHome/internal/dhcpd
Ainar Garipov 09196118e9 Pull request: dhcpd: fix possible infinite loop, set timeouts better
Merge in DNS/adguard-home from 2301-dhcp-check to master

Closes #2301.

Squashed commit of the following:

commit bf5c31b8592f909a372fcdaebacc491d310cc3e6
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date:   Fri Nov 13 14:28:54 2020 +0300

    dhcpd: fix possible infinite loop, set timeouts better
2020-11-13 14:40:22 +03:00
..
nclient4 Pull request:* all: fix all staticcheck simplification and unused warnings 2020-11-06 12:15:08 +03:00
check_other_dhcp_windows.go Pull request: * all: move internal Go packages to internal/ 2020-10-30 13:32:02 +03:00
check_other_dhcp.go Pull request: dhcpd: fix possible infinite loop, set timeouts better 2020-11-13 14:40:22 +03:00
db.go Pull request: * all: move internal Go packages to internal/ 2020-10-30 13:32:02 +03:00
dhcp_http.go Pull request: * dhcpd: send secondary dns as well 2020-11-09 19:27:04 +03:00
dhcpd_test.go Pull request:* all: fix all staticcheck simplification and unused warnings 2020-11-06 12:15:08 +03:00
dhcpd.go Pull request: * all: move internal Go packages to internal/ 2020-10-30 13:32:02 +03:00
helpers.go Pull request: * dhcpd: send secondary dns as well 2020-11-09 19:27:04 +03:00
network_utils_test.go Pull request: * all: move internal Go packages to internal/ 2020-10-30 13:32:02 +03:00
network_utils.go Pull request:* all: fix all staticcheck simplification and unused warnings 2020-11-06 12:15:08 +03:00
os_windows.go Pull request: * all: move internal Go packages to internal/ 2020-10-30 13:32:02 +03:00
README.md Pull request: * all: move internal Go packages to internal/ 2020-10-30 13:32:02 +03:00
router_adv_test.go Pull request: * all: move internal Go packages to internal/ 2020-10-30 13:32:02 +03:00
router_adv.go Pull request:* all: remove github.com/joomcode/errorx dependency 2020-11-05 15:20:57 +03:00
server.go Pull request: * all: move internal Go packages to internal/ 2020-10-30 13:32:02 +03:00
v4_test.go Pull request: * all: move internal Go packages to internal/ 2020-10-30 13:32:02 +03:00
v4.go Pull request: * dhcpd: send secondary dns as well 2020-11-09 19:27:04 +03:00
v6_test.go Pull request: * all: move internal Go packages to internal/ 2020-10-30 13:32:02 +03:00
v6.go Pull request: * dhcpd: send secondary dns as well 2020-11-09 19:27:04 +03:00
v46_windows.go Pull request: * all: move internal Go packages to internal/ 2020-10-30 13:32:02 +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