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DHCP service offering DHCP packets on other interface...

sratson

I have a network setup with the main LAN on interface eth2 with a DHCP server on the network, and a separate wireless LAN on eth3 with the UTM offering DHCP for that interface. The only thing attached to that IF is a Wireless AP (Not sophos). For some reason, the UTM is offering DHCP addresses on the eth2 IF conflicting with the main LAN DHCP server. This causes issues since the traffic in the WLAN subnet is not allowed to talk to the LAN subnet in the firewall rules, which is working, but people that should be on LAN are not getting LAN IPs all the time.

Any ideas? Thanks.



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    My first hunch is you have a loop in your network somewhere that is bridging eth2 and eth3 together in the same layer 2 domain.  This could be a physical issue with cabling, or more commonly a VLAN/trunking issue.  I seriously doubt you will find the issue is with the UTM DHCP process, but there is always a possibility I guess.

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    My first hunch is you have a loop in your network somewhere that is bridging eth2 and eth3 together in the same layer 2 domain.  This could be a physical issue with cabling, or more commonly a VLAN/trunking issue.  I seriously doubt you will find the issue is with the UTM DHCP process, but there is always a possibility I guess.

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