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    DHCP issue

    Scheduled Pinned Locked Moved 2.1 Snapshot Feedback and Problems - RETIRED
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    • jimpJ
      jimp Rebel Alliance Developer Netgate
      last edited by

      I don't know, but it's definitely the client rejecting the IP.

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      • P
        pierob
        last edited by

        From RFC2131:
        "If the server receives a DHCPDECLINE message, the client has discovered through some other means that the suggested network address is already in use. The server MUST mark the network address as not available and SHOULD notify the local system administrator of a possible configuration problem."

        Maybe you can check on 04:54:53 system logs the reason why it declines the offer (e.g. what these other means are).

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        • jimpJ
          jimp Rebel Alliance Developer Netgate
          last edited by

          Yep, most likely it's already in use.

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          • M
            Metu69salemi
            last edited by

            Do you happen to have any network printers or accesspoint's (or any other network-using device) which have this address as static?

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            • johnpozJ
              johnpoz LAYER 8 Global Moderator
              last edited by

              or for that matter .26 setup on another interface on that box that is maybe not connected currently?

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              • X
                xbipin
                last edited by

                there is nothing on 0.26 and never was also

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                • johnpozJ
                  johnpoz LAYER 8 Global Moderator
                  last edited by

                  Well it sure looks like the box is declining the .26 address.  Why would it do that unless it believes there is something else on the .26?

                  If you say it accepts .29 – why not just change your reservation for it to be on .29?

                  An intelligent man is sometimes forced to be drunk to spend time with his fools
                  If you get confused: Listen to the Music Play
                  Please don't Chat/PM me for help, unless mod related
                  SG-4860 24.11 | Lab VMs 2.8, 24.11

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                  • jimpJ
                    jimp Rebel Alliance Developer Netgate
                    last edited by

                    Try to assign 0.26 to something that would give you more verbose DHCP logging output - like another pfSense box/vm, a linux box, etc.

                    If it also rejects 0.26 you'd at least get a better answer about why.

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                    • X
                      xbipin
                      last edited by

                      there is nothing else on 0.26 because all devices r on dhcp, no static ip assigned to any devoce at all and nor does pfsense show it giving it out to any device because the pool starts and ends in a different range. all my deivces have static mapping in pfsense so there isnt anything magically conencting to it by any chance. i can always just use the 0.29 but if its a bug it needs to be traced and fixed, also if there is any other deivce with same ip then the dhcp gives a different message i guess, like not available or so which i guess any1 can try it out.

                      ill try to assign 0.26 to some other device and see what the logs show

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                      • jimpJ
                        jimp Rebel Alliance Developer Netgate
                        last edited by

                        It is not a bug on pfSense. If it is a bug, it's a bug on the DHCP client, not pfSense.

                        pfSense can't make a client tell pfSense to reject an IP - the client is generating that response - not the firewall. There is nothing to "trace" or fix.

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                        • X
                          xbipin
                          last edited by

                          i just assigned the same 0.26 to a grandstream voip phone and it seems pfsense gave it out just fine this time and the phone was able to call out also without issues but as soon as i switch my ipad to 0.26, its the same old declining message.

                          also tried overlapping devices with same ip and it seems dhcpd says unavailable as message but not "not found"

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                          • jimpJ
                            jimp Rebel Alliance Developer Netgate
                            last edited by

                            There you have it then… it's a problem with the iPad DHCP client somehow. Why, it's difficult/impossible to say, but it's the client for sure.

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                            • X
                              xbipin
                              last edited by

                              if its the ipad then y does it work on 0.29?

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                              • jimpJ
                                jimp Rebel Alliance Developer Netgate
                                last edited by

                                No idea, that's a question for Apple…

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                                • X
                                  xbipin
                                  last edited by

                                  ok lets just forget it, ill avoid 0.26 for the ipad

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                                  • johnpozJ
                                    johnpoz LAYER 8 Global Moderator
                                    last edited by

                                    Clearly a strange issue to be sure, do you have a different ipad you could try an assign the .26 too?  is it some weird bug in the OS or the dhcpclient on the devices or something specific on that device.  Could it at one time been assigned .26 as static or from some other dhcp server and now it is rejecting that?

                                    An intelligent man is sometimes forced to be drunk to spend time with his fools
                                    If you get confused: Listen to the Music Play
                                    Please don't Chat/PM me for help, unless mod related
                                    SG-4860 24.11 | Lab VMs 2.8, 24.11

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                                    • X
                                      xbipin
                                      last edited by

                                      i dont have enough money to buy another, mayb some1 can donate 1 :)

                                      ipad is on the latest ios version, all the wireless access points have dhcp disabled so there is nothing else giving out ips

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                                      • johnpozJ
                                        johnpoz LAYER 8 Global Moderator
                                        last edited by

                                        And your ipad has never been on any other network?  Ever??

                                        An intelligent man is sometimes forced to be drunk to spend time with his fools
                                        If you get confused: Listen to the Music Play
                                        Please don't Chat/PM me for help, unless mod related
                                        SG-4860 24.11 | Lab VMs 2.8, 24.11

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                                        • X
                                          xbipin
                                          last edited by

                                          same isp using netgear router earlier before i replaced it with alix and pfsense but its on dhcp ever since i got it

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                                          • johnpozJ
                                            johnpoz LAYER 8 Global Moderator
                                            last edited by

                                            so did you give it .26 before when it was on the netgear network?

                                            Maybe if it got .26 from different dhcp server is why it declines .26 from this dhcp server?

                                            An intelligent man is sometimes forced to be drunk to spend time with his fools
                                            If you get confused: Listen to the Music Play
                                            Please don't Chat/PM me for help, unless mod related
                                            SG-4860 24.11 | Lab VMs 2.8, 24.11

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