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Is there some issue with DHCP relay now?
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Topic: Is there some issue with DHCP relay now? (Read 1380 times)
loganx1121
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Is there some issue with DHCP relay now?
«
on:
March 09, 2022, 01:15:35 am »
I just noticed this. The DHCP relay just doesn't seem to work anymore. I'm currently on version OPNsense 22.1.2_1. I noticed in the logs the traffic was hitting the "Block bogon rule". I've had that rule enabled on all the internal interfaces since forever, but ok, I unchecked the box. Then I see traffic in the firewall log coming from 0.0.0.0 port 68 to 255.255.255.255 port 57 on UDP...DHCP broadcast. There wasn't a specific rule for this. I never needed a specific rule for this before, but ok, made some rules.
It still isn't working. I have about 6 or 7 subnets that all rely on the relay and I've tested each one. Nothing seems to be able to get an IP address all of a sudden. I update the firewall to the above version because I saw there was an update and figured it couldn't hurt.
I don't have a lot of "in and out" with devices in my house so it's possible this has been broken for week since I update to "watchful owl" or whatever it's called and I'm just noticing it now. I see the relay is generating logs, and I did some pcaps on the FW interface and I see it doing "DHCP Request", but nothing will get an address.
Anyone have any ideas? I've made no changes to the network at all aside from the firewall upgrades.
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TA_Soft
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Re: Is there some issue with DHCP relay now?
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Reply #1 on:
June 02, 2022, 01:56:47 pm »
It may be that the relay is generally not working since the new update. Unfortunately, I have the same problem that the relay sends IP addresses only sporadically. One day later it doesn't do that anymore.
See here:
https://forum.opnsense.org/index.php?topic=28592.msg138889#msg138889
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Is there some issue with DHCP relay now?