Archive > 21.7 Legacy Series

Does DHCP relay have a bug??

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bigops:
I have configured one of the interfaces in OPNSense as DHCP relay.  Even thought the IP address is leased successfully the ISC-DHCP-Server complains that the request is not coming from correct network.  I did a Packet capture and it seems that the same request is being sent by OPNsene with some packets having the relay info and some other without the relay server info.  Is this a bug .  I am attaching the wireshark captures which shows the issue

Fright:
what is whose address in your captures ?
is Append circuit ID option is set in relay configuration page?

bigops:
The 172.17.12.130 is the DHCP server and the relay agent is supposed to be 172.17.15.254 which is the Layer 3 interface of the VLAN.  Do not expect to see 192.168.0.1 as an agent as it is only a transport VLAN.  The append circuit id is not configured

Fright:
got it, thanks. have you tried excluding "192.168.0.1" interface from Relay "Interface(s)"?

bigops:
I have not seen an option to specifically exclude the interface from the Relay in OpnSense.  But in the Relay configuration page only the VLAN interface has been configured as a Relay agent

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