AdGuardHome/internal/dhcpd
Eugene Burkov 86444eacc2 Pull request: 2704 local addresses vol.2
Merge in DNS/adguard-home from 2704-local-addresses-vol.2 to master

Updates #2704.
Updates #2829.

Squashed commit of the following:

commit 507d038c2709de59246fc0b65c3c4ab8e38d1990
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Wed Mar 31 14:33:05 2021 +0300

    aghtest: fix file name

commit 8e19f99337bee1d88ad6595adb96f9bb23fa3c41
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Wed Mar 31 14:06:43 2021 +0300

    aghnet: rm redundant mutexes

commit 361fa418b33ed160ca20862be1c455ab9378c03f
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Wed Mar 31 13:45:30 2021 +0300

    all: fix names, docs

commit 14034f4f0230d7aaa3645054946ae5c278089a99
Merge: 35e265cc a72ce1cf
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Wed Mar 31 13:38:15 2021 +0300

    Merge branch 'master' into 2704-local-addresses-vol.2

commit 35e265cc8cd308ef1fda414b58c0217cb5f258e4
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Wed Mar 31 13:33:35 2021 +0300

    aghnet: imp naming

commit 7a7edac7208a40697d7bc50682b923a144e28e2b
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Tue Mar 30 20:59:54 2021 +0300

    changelog: oops, nope yet

commit d26a5d2513daf662ac92053b5e235189a64cc022
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Tue Mar 30 20:55:53 2021 +0300

    all: some renaming for the glory of semantics

commit 9937fa619452b0742616217b975e3ff048d58acb
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Mon Mar 29 15:34:42 2021 +0300

    all: log changes

commit d8d9e6dfeea8474466ee25f27021efdd3ddb1592
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Fri Mar 26 18:32:23 2021 +0300

    all: imp localresolver, imp cutting off own addresses

commit 344140df449b85925f19b460fd7dc7c08e29c35a
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Fri Mar 26 14:53:33 2021 +0300

    all: imp code quality

commit 1c5c0babec73b125044e23dd3aa75d8eefc19b28
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Thu Mar 25 20:44:08 2021 +0300

    all: fix go.mod

commit 0b9fb3c2369a752e893af8ddc45a86bb9fb27ce5
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Thu Mar 25 20:38:51 2021 +0300

    all: add error handling

commit a7a2e51f57fc6f8f74b95a264ad345cd2a9e026e
Merge: c13be634 27f4f052
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Thu Mar 25 19:48:36 2021 +0300

    Merge branch 'master' into 2704-local-addresses-vol.2

commit c13be634f47bcaed9320a732a51c0e4752d0dad0
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Thu Mar 25 18:52:28 2021 +0300

    all: cover rdns with tests, imp aghnet functionality

commit 48bed9025944530c613ee53e7961d6d5fbabf8be
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Wed Mar 24 20:18:07 2021 +0300

    home: make rdns great again

commit 1dbacfc8d5b6895807797998317fe3cc814617c1
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Wed Mar 24 16:07:52 2021 +0300

    all: imp external client restriction

commit 1208a319a7f4ffe7b7fa8956f245d7a19437c0a4
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Mon Mar 22 15:26:45 2021 +0300

    all: finish local ptr processor

commit c8827fc3db289e1a5d7a11d057743bab39957b02
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Tue Mar 2 13:41:22 2021 +0300

    all: imp ipdetector, add local ptr processor
2021-03-31 15:00:47 +03:00
..
nclient4 Pull request: all: rm var shadowing vol. 3 2021-03-11 21:30:52 +03:00
bitset_test.go Pull request: dhcpd: imp static lease validation 2021-03-18 17:07:13 +03:00
bitset.go Pull request: dhcpd: imp static lease validation 2021-03-18 17:07:13 +03:00
checkother_windows.go Pull request: all: fix lint and naming issues vol. 2 2020-12-07 15:38:05 +03:00
checkother.go Pull request: all: rm var shadowing vol. 3 2021-03-11 21:30:52 +03:00
db.go Pull request: dhcpd: imp static lease validation 2021-03-18 17:07:13 +03:00
dhcpd_test.go Pull request: dhcpd: imp static lease validation 2021-03-18 17:07:13 +03:00
dhcpd.go Pull request: dhcpd: imp static lease validation 2021-03-18 17:07:13 +03:00
helpers.go Pull request: 2508 ip conversion vol.1 2021-01-13 16:56:05 +03:00
http_test.go Pull request: dhcpd: assume static ip on eperm 2021-02-12 16:40:34 +03:00
http.go Pull request: 2704 local addresses vol.2 2021-03-31 15:00:47 +03:00
iprange_test.go Pull request: dhcpd: imp static lease validation 2021-03-18 17:07:13 +03:00
iprange.go Pull request: dhcpd: imp static lease validation 2021-03-18 17:07:13 +03:00
nullbool_test.go Pull request: dhcpd: do not override ra-slaac settings 2021-02-11 20:49:03 +03:00
nullbool.go Pull request: dhcpd: do not override ra-slaac settings 2021-02-11 20:49:03 +03:00
options_test.go Pull request: dhcpd: fix ip ranges 2021-03-16 19:11:32 +03:00
options.go Pull request: dhcpd: fix ip ranges 2021-03-16 19:11:32 +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
routeradv_test.go Pull request: dhcpd: do not assume mac addrs of 6 bytes 2021-03-31 12:36:57 +03:00
routeradv.go Pull request: dhcpd: do not assume mac addrs of 6 bytes 2021-03-31 12:36:57 +03:00
server.go Pull request: dhcpd: imp static lease validation 2021-03-18 17:07:13 +03:00
v4_test.go Pull request: dhcpd: imp static lease validation 2021-03-18 17:07:13 +03:00
v4.go Pull request: dhcpd: do not assume mac addrs of 6 bytes 2021-03-31 12:36:57 +03:00
v6_test.go Pull request: 2639 use testify require vol.3 2021-02-12 13:27:44 +03:00
v6.go Pull request: dhcpd: do not assume mac addrs of 6 bytes 2021-03-31 12:36:57 +03:00
v46_test.go Pull request: 2639 use testify require vol.3 2021-02-12 13:27:44 +03:00
v46_windows.go Pull request: dhcpd: imp static lease validation 2021-03-18 17:07:13 +03:00
v46.go Pull request: dhcpd: wait for interfaces' ip addresses to appear 2020-11-27 14:39:43 +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