"The DHCP Server is active on this interface"

[clarknova]

26.1.9

I had to enable the Dnsmasq DHCP on my WAN interface temporarily to access a modem that was connected there. Once done, I disabled Dnsmasq and removed all options and scopes. Then I tried to change the WAN's IPv4 configuration from static to DHCP and got the red notice:

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The following input errors were detected:

    The DHCP Server is active on this interface and it can be used only with a static IP configuration. Please disable the DHCP Server service on this interface first, then change the interface configuration.
I confirmed that Dnsmasq and Kea are disabled. ISC plugin is not installed. The Services widget on the dashboard doesn't list any DHCP server. I even rebooted, but the error persists.

How do I get rid of this error message so I can enable the DHCP client on the WAN interace?

[clarknova]

I downloaded the config file and found this:

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  <dhcpd>
    <lan>
      <range>
        <from>192.168.97.10</from>
        <to>192.168.97.245</to>
      </range>
    </lan>
    </wan>
      <enable>1</enable>
      <ddnsdomainalgorithm>hmac-md5</ddnsdomainalgorithm>
      <numberoptions>
        <item/>
      </numberoptions>
      <range>
        <from>192.168.2.100</from>
        <to>192.168.2.110</to>
      </range>
      <winsserver/>
      <dnsserver/>
      <ntpserver/>
    </wan>
  </dhcpd>
I changed the 1 to a 0 and uploaded the config, but I'm still seeing the error. I believe this is a remnant from when I was running ISC DHCP server in 24.7.x. I used 'opnsense-bootstrap -r 26.1' to get up to date, but I guess this part of the config was left behind. I'm not sure how to remove it properly.

[clarknova]

Ok, I installed the ISC-DHCP plugin, disabled it on WAN, then was able to set my WAN IPv4 to DHCP. Looking at the updated config file, it looks like I just needed to remove the '<enable>1</enable>' line altogether.

Can I make a feature request here? It would be great if OPNsense would remove this line when the ISC-DHCP plugin is not installed, or ignore it when configuring the WAN interface.