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Title: DHCP ISC DHCPV4 IP assigment Issue
Post by: smnaqvee on February 20, 2025, 05:37:46 PM

Hi All <

I have VLAN created on LAN interface . However when I attch that LAN interface cable to my PC I dont get any IP rather APIPA assigned with 169.x.x.x. But when I read DHCP logs see :
2025-02-20T16:26:35 Error dhcpd receive_packet failed on vlan03: Device not configured
2025-02-20T16:26:35 Error dhcpd receive_packet failed on vlan02: Device not configured
2025-02-20T16:26:35 Error dhcpd receive_packet failed on vlan01: Device not configured

These all are 3 VLANS.

Howevr even LAN interface dont assign IP whereas all DHCP enabled all settings are correct. But whrn I reboot firewall box or reload all services then I get Ip instantly. Any idea and hints on this ? Thanks

Title: Re: DHCP ISC DHCPV4 IP assigment Issue
Post by: meyergru on February 20, 2025, 06:41:44 PM

You have to restart the dhcp service daemon after changing network topology, otherwise it will not detect the interfaces correctly.

Title: Re: DHCP ISC DHCPV4 IP assigment Issue
Post by: smnaqvee on February 20, 2025, 06:47:36 PM

Thanks is it same like restarting DHCP serice from Opnsense UI interface? As I restarted it many times from main console of opnsense and from UI

Title: Re: DHCP ISC DHCPV4 IP assigment Issue
Post by: meyergru on February 20, 2025, 06:52:43 PM

Yes, but I assume there may be other things that could use a restart, as well. Changing network topology is probably a good reason for a reboot in order to clear things up.

Title: Re: DHCP ISC DHCPV4 IP assigment Issue
Post by: smnaqvee on February 20, 2025, 06:53:49 PM

Yeah once reboot opnsense box or reload all services then get Ip else it does not work at all.

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English Forums => General Discussion => Topic started by: smnaqvee on February 20, 2025, 05:37:46 PM