DHCPREQUEST wrong network???



  • I have a Proxmox server running a virtual  Pfsense 2.4 on my small home network.

    I have some devices ( most all ESP8266 wireless type devices) that fail to get a dhcp address.  I see the follwoing message in the log file:

    DHCPREQUEST for 192.168.1.14 (192.168.1.1) from 5c:cf:7f:b7:61:71 via vtnet1: wrong network.

    My home network is 192.168.100.0,  IF understrand correctly somehow this request is coming from 192.168.1.0 network? I did a nmap scan of my netrwork, there is only 1 dhcp server.

    Im not even sure how this is possible, could someone shed some light on this???  thx.


  • Netgate Administrator

    Hmm, it sure looks like a response to a dhcp offer. Rogue dhcp server would still be my prime suspect there.

    Steve


  • Netgate

    A client that previously had that address will request that address again.

    It should get a NAK then do a discover, offer, request, ack dance for the network it is currently connected to.

    What else is logged related to that MAC address?



  • @dad311:

    Im not even sure how this is possible, could someone shed some light on this???  thx.

    DHCP clients try for the previous address.  If available, the DHCP server will provide it.



  • Thx for the replies!  Although nmap reported only 1 dhcp sever on the network, I found an access point with dhcp turned.  I'm assuming this was the issue…..