DHCP server dont give WINS and DNS server that I've setup

M0L50N · Aug 28, 2024, 11:11 AM

Hi,

I'm doing some change in my infra, and just want to adjust my DHCP service to give different IP for Wins/DNS to my client.

I change these settings in the service on my LAN interface, tried to release renew DHCP on client and they receive the same WINS/DNS as before my change!?!?

my Lease are at 7200 ... then to be sur I waited until the next day = same. Retry to release/renew = same

I double check on 2-3 clients, they have the good DHCP server pointing to my pfsense.

I upgraded to last 2.7.2 because I were to 2.7.0 = same problem (then try to restart service and reboot few times)

I'm still with ISC DHCP, can it be the cause? For now I cant upgrade to KEA because last time I tried, I've got some problem ... already created a post for this but got any answer Kea service problem

Any suggestion?

Thanks

johnpoz · Aug 28, 2024, 1:42 PM

@M0L50N wins - really? Your still using wins? Still running some windows 3.11 boxes or something?

Do you maybe have a reservation setup for this client, with the old settings?

So on my 2.7.2 pfsense - you can see I had the 1st settings, I added wins because I didn't have that in there before.. Who still uses wins?? Any who, I then changed the dns and wins and applied, then renewed dhcp lease with ipconfig /renew and you can see it got the new IPs for both dns and wins

M0L50N · Aug 28, 2024, 1:42 PM

@johnpoz hehe .... I know for WINS. Dont know why I keep it!!! :)

I know that works ... I have more than 8 sites with pfsense and all works normally except this one who is buggy somewhere ... and I dont know how I can resolve that.

Someone can help me to diagnose please?

Thanks!

johnpoz · Aug 28, 2024, 2:03 PM

@M0L50N well first thing I would do is look in your lease settings in the actual conf of dhcp server.. Then I would sniff your dhcp traffic on pfsense - do you see the client ask for that info, what does pfsense hand out.

Is it possible you have a reservation for these clients that are not getting the change - if you created a reservation with different settings for client X, you would need to update the reservation of pfsense with the settings you want to hand out..

You can directly look in the dhcpd.conf file for the settings.. Are they actually changing when you update them in the gui?

M0L50N · Aug 28, 2024, 3:14 PM

@johnpoz I forgot to modify settings in my second dhcp pool I created some years ago ...

Thanks for your help!