A DHCP Server Valentine for Clients

The DHCP problem on the new router is annoying, but at least I’m having fun while trying to figure it out.

  1. Returned the bedroom Logitech Squeezebox Radio to dynamic DHCP
  2. The two other Radios and Squeezebox Touch streamer remain static DHCP IP address assignments
  3. Rebooted the G3100 router
  4. Ran the Ethernet network connection option on the Radios and the Touch
  5. The Ethernet connection icons flashed red, indicating a momentary loss of IP address due to a connectivity break from the IOGEAR adapters
  6. Checked the router’s LAN DHCP log
  7. The network connection routines, as indicated by the icons, had initiated DHCP renewals
  8. All of the DHCP sequences succeeded
BEDROOM - DYNAMIC DHCP
----------------------
[LDHCP] DHCPACK on 192.168.1.246 to 00:04:20:26:7e:57 (SqueezeboxRadio) via br-lan
2025 Feb 14 11:26:33

[LDHCP] DHCPREQUEST for 192.168.1.246 (192.168.1.1) from 00:04:20:26:7e:57 (SqueezeboxRadio) via br-lan
2025 Feb 14 11:26:33

[LDHCP] DHCPOFFER on 192.168.1.246 to 00:04:20:26:7e:57 (SqueezeboxRadio) via br-lan
2025 Feb 14 11:26:32

[LDHCP] DHCPDISCOVER from 00:04:20:26:7e:57 (SqueezeboxRadio) via br-lan
2025 Feb 14 11:26:27

[LDHCP] DHCPRELEASE of 0.0.0.0 from 00:04:20:26:7e:57 via br-lan (not found)
2025 Feb 14 11:26:27

[LDHCP] DHCPRELEASE from 00:04:20:26:7e:57 specified requested-address.
2025 Feb 14 11:25:38


GUEST ROOM - STATIC DHCP
------------------------
[LDHCP] DHCPACK on 192.168.1.212 to 00:04:20:29:e6:b1 (SqueezeboxRadio) via br-lan
2025 Feb 14 11:25:38

[LDHCP] DHCPREQUEST for 192.168.1.212 (192.168.1.1) from 00:04:20:29:e6:b1 (SqueezeboxRadio) via br-lan
2025 Feb 14 11:25:37

[LDHCP] DHCPOFFER on 192.168.1.212 to 00:04:20:29:e6:b1 (SqueezeboxRadio) via br-lan
2025 Feb 14 11:25:37

[LDHCP] DHCPDISCOVER from 00:04:20:29:e6:b1 (SqueezeboxRadio) via br-lan
2025 Feb 14 11:25:32

[LDHCP] DHCPRELEASE of 0.0.0.0 from 00:04:20:29:e6:b1 via br-lan (not found)
2025 Feb 14 11:25:32

[LDHCP] DHCPRELEASE from 00:04:20:29:e6:b1 specified requested-address.


KITCHEN - STATIC DHCP
---------------------
[LDHCP] DHCPACK on 192.168.1.194 to 00:04:20:2c:84:5c (SqueezeboxRadio) via br-lan
2025 Feb 14 11:21:40

[LDHCP] DHCPREQUEST for 192.168.1.194 (192.168.1.1) from 00:04:20:2c:84:5c (SqueezeboxRadio) via br-lan
2025 Feb 14 11:21:39

[LDHCP] DHCPOFFER on 192.168.1.194 to 00:04:20:2c:84:5c (SqueezeboxRadio) via br-lan
2025 Feb 14 11:21:39

[LDHCP] DHCPDISCOVER from 00:04:20:2c:84:5c (SqueezeboxRadio) via br-lan
2025 Feb 14 11:21:35

[LDHCP] DHCPRELEASE of 0.0.0.0 from 00:04:20:2c:84:5c via br-lan (not found)
2025 Feb 14 11:21:35

[LDHCP] DHCPRELEASE from 00:04:20:2c:84:5c specified requested-address.
2025 Feb 14 11:21:07


TOUCH - STATIC DHCP
-------------------
[LDHCP] DHCPACK on 192.168.1.222 to 00:04:20:22:fe:84 (SqueezeboxTouch) via br-lan
2025 Feb 14 11:16:43

[LDHCP] DHCPREQUEST for 192.168.1.222 (192.168.1.1) from 00:04:20:22:fe:84 (SqueezeboxTouch) via br-lan
2025 Feb 14 11:16:43

[LDHCP] DHCPOFFER on 192.168.1.222 to 00:04:20:22:fe:84 (SqueezeboxTouch) via br-lan
2025 Feb 14 11:16:43

[LDHCP] DHCPDISCOVER from 00:04:20:22:fe:84 (SqueezeboxTouch) via br-lan

[LDHCP] DHCPRELEASE of 0.0.0.0 from 00:04:20:22:fe:84 via br-lan (not found)
2025 Feb 14 11:16:39

[LDHCP] DHCPRELEASE from 00:04:20:22:fe:84 specified requested-address. 

What am I to make of this? Before I rebooted the router, DHCP lease renewal wasn’t working on these devices, whether or not the assigned private network IP addresses were static. Now I see the classic DORA stages — Discovery, Offer, Request and Acknowledgment.

Is the problem somehow now gone? All I can do is wait 24 hours to see if the Ethernet icons go red, and stay red, again. (DHCP lease timeout is 1440 minutes ÷ 60 = 24 hours)

2 thoughts on “A DHCP Server Valentine for Clients”

  1. Where’s that detailed logging happening? Is that on the router? Or are you running a sniffer? Anyway, very handy!

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