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    Invalid DHCP pool - for LAN subnet 192.168.xx.0/23 detected. Please correct the settings in Services, DHCP Server

    Scheduled Pinned Locked Moved DHCP and DNS
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    • johnpozJ
      johnpoz LAYER 8 Global Moderator
      last edited by johnpoz

      I'm not seeing anything in there jumping out at me that should throw an error to be honest.

      I'm not a fan of single label domains that is for sure ;) But that wouldn't throw an error about your pool

      Can you pull out your options, like you have pxe setup and see if that makes the error go away..

      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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      • P
        pyrodex @johnpoz
        last edited by

        @johnpoz said in Invalid DHCP pool - for LAN subnet 192.168.xx.0/23 detected. Please correct the settings in Services, DHCP Server:

        I'm not seeing anything in there jumping out at me that should throw an error to be honest.

        I'm not a fan of single label domains that is for sure ;) But that wouldn't throw an error about your pool

        Can you pull out your options, like you have pxe setup and see if that makes the error go away..

        Done and same error:

        Dec 23 13:07:41 firewall php-fpm[350]: /services_dhcp.php: New alert found: Invalid DHCP pool  -  for LAN subnet 192.168.14.0/23 detected. Please correct the settings in Services, DHCP Server
        
        
        option domain-name "lan";
        option ldap-server code 95 = text;
        option domain-search-list code 119 = text;
        option arch code 93 = unsigned integer 16; # RFC4578
        
        default-lease-time 7200;
        max-lease-time 86400;
        log-facility local7;
        one-lease-per-client true;
        deny duplicates;
        ping-check true;
        update-conflict-detection false;
        authoritative;
        subnet 192.168.14.0 netmask 255.255.254.0 {
                pool {
        
                        range 192.168.15.20 192.168.15.50;
                }
        
                option routers 192.168.14.1;
                option domain-name "lan";
                option domain-search "lan","iot","dmz";
                option domain-name-servers 192.168.14.1;
                default-lease-time 86400;
                option ntp-servers 192.168.14.1;
        
        }
        

        Screen Shot 2019-12-23 at 1.09.01 PM.png

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        • johnpozJ
          johnpoz LAYER 8 Global Moderator
          last edited by

          So is dhcpd actually running, does it hand out IPs for this scope?

          Can we see the full start of log of dhcpd? Are you seeing any other errors about binding to interface or anything like 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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          • P
            pyrodex @johnpoz
            last edited by

            @johnpoz said in Invalid DHCP pool - for LAN subnet 192.168.xx.0/23 detected. Please correct the settings in Services, DHCP Server:

            So is dhcpd actually running, does it hand out IPs for this scope?

            Can we see the full start of log of dhcpd? Are you seeing any other errors about binding to interface or anything like that?

            DHCP runs fine and binds to all interfaces configured (vmx0 - vmx3)

            [2.4.4-RELEASE][root@firewall.lan]/var/log: ps auxww | grep -i dhcpd
            root    44059   0.0  0.0   6200  2204  -  Is   14:18      0:00.00 /usr/local/sbin/dhcpleases -l /var/dhcpd/var/db/dhcpd.leases -d lan -p /var/run/unbound.pid -u /var/unbound/dhcpleases_entries.conf -h /etc/hosts
            root    45542   0.0  0.0   6408  2600  -  Ss   23:36      1:32.06 /usr/sbin/syslogd -s -c -c -l /var/dhcpd/var/run/log -l /tmp/haproxy_chroot/var/run/log -P /var/run/syslog.pid -f /etc/syslog.conf -b 192.168.14.1
            dhcpd   56636   0.0  0.0  12584  8224  -  Ss   14:18      0:00.01 /usr/local/sbin/dhcpd -user dhcpd -group _dhcp -chroot /var/dhcpd -cf /etc/dhcpd.conf -pf /var/run/dhcpd.pid vmx1 vmx2 vmx3 vmx0
            root    83462   0.0  0.0   6764  2764  0  I+   13:08      0:00.00 more dhcpd.conf
            root    47558   0.0  0.0   6564  2456  1  S+   14:19      0:00.00 grep -i dhcpd
            [2.4.4-RELEASE][root@firewall.lan]/var/log: 
            

            No DHCP log looks clean, he is a log fresh from going to the Web UI and hitting SAVE on the LAN interface in DHCP page. This log also shows me turning WiFi off and on for a device showing it handing out the proper IP based on static. I also have non static clients getting from the range without issue.

            Message from syslogd@firewall at Dec 23 14:18:03 ...
            firewall php-fpm[28463]: /index.php: Successful login for user 'admin' from: 192.168.14.1 (Local Database)
            Dec 23 14:18:16 firewall dhcpleases: /etc/hosts changed size from original!
            Dec 23 14:18:16 firewall dhcpleases: Sending HUP signal to dns daemon(15582)
            Dec 23 14:18:16 firewall dhcpleases: Could not deliver signal HUP to process because its pidfile (/var/run/unbound.pid) does not exist, No such process.
            Dec 23 14:18:16 firewall dhcpleases: kqueue error: unknown
            Dec 23 14:18:16 firewall dhcpleases: Sending HUP signal to dns daemon(46048)
            Dec 23 14:18:17 firewall dhcpd: Internet Systems Consortium DHCP Server 4.3.6-P1
            Dec 23 14:18:17 firewall dhcpd: Copyright 2004-2018 Internet Systems Consortium.
            Dec 23 14:18:17 firewall dhcpd: All rights reserved.
            Dec 23 14:18:17 firewall dhcpd: For info, please visit https://www.isc.org/software/dhcp/
            Dec 23 14:18:17 firewall dhcpd: Config file: /etc/dhcpd.conf
            Dec 23 14:18:17 firewall dhcpd: Database file: /var/db/dhcpd.leases
            Dec 23 14:18:17 firewall dhcpd: PID file: /var/run/dhcpd.pid
            Dec 23 14:18:17 firewall dhcpd: Internet Systems Consortium DHCP Server 4.3.6-P1
            Dec 23 14:18:17 firewall dhcpd: Copyright 2004-2018 Internet Systems Consortium.
            Dec 23 14:18:17 firewall dhcpd: All rights reserved.
            Dec 23 14:18:17 firewall dhcpd: For info, please visit https://www.isc.org/software/dhcp/
            Dec 23 14:18:17 firewall dhcpd: Wrote 0 deleted host decls to leases file.
            Dec 23 14:18:17 firewall dhcpd: Wrote 0 new dynamic host decls to leases file.
            Dec 23 14:18:17 firewall dhcpd: Wrote 3 leases to leases file.
            Dec 23 14:18:17 firewall dhcpd: Listening on BPF/vmx0/00:50:56:b5:29:1a/192.168.215.0/24
            Dec 23 14:18:17 firewall dhcpd: Sending on   BPF/vmx0/00:50:56:b5:29:1a/192.168.215.0/24
            Dec 23 14:18:17 firewall dhcpd: Listening on BPF/vmx3/00:50:56:b5:af:39/192.168.220.0/24
            Dec 23 14:18:17 firewall dhcpd: Sending on   BPF/vmx3/00:50:56:b5:af:39/192.168.220.0/24
            Dec 23 14:18:17 firewall dhcpd: Listening on BPF/vmx2/00:50:56:b5:de:62/192.168.24.0/23
            Dec 23 14:18:17 firewall dhcpd: Sending on   BPF/vmx2/00:50:56:b5:de:62/192.168.24.0/23
            Dec 23 14:18:17 firewall dhcpd: Listening on BPF/vmx1/00:50:56:b5:4a:64/192.168.14.0/23
            Dec 23 14:18:17 firewall dhcpd: Sending on   BPF/vmx1/00:50:56:b5:4a:64/192.168.14.0/23
            Dec 23 14:18:17 firewall dhcpd: Sending on   Socket/fallback/fallback-net
            Dec 23 14:18:17 firewall dhcpd: Server starting service.
            Dec 23 14:18:17 firewall dhcpleases: Sending HUP signal to dns daemon(46048)
            Dec 23 14:18:17 firewall dhcpleases: Sending HUP signal to dns daemon(46048)
            Dec 23 14:19:02 firewall dhcpd: DHCPREQUEST for 192.168.14.200 from f0:c3:71:56:93:c3 via vmx1
            Dec 23 14:19:02 firewall dhcpd: DHCPACK on 192.168.14.200 to f0:c3:71:56:93:c3 via vmx1
            Dec 23 14:19:02 firewall dhcpd: DHCPREQUEST for 192.168.14.200 from f0:c3:71:56:93:c3 via vmx1
            Dec 23 14:19:02 firewall dhcpd: DHCPACK on 192.168.14.200 to f0:c3:71:56:93:c3 via vmx1
            Dec 23 14:19:02 firewall dhcpd: DHCPREQUEST for 192.168.14.200 from f0:c3:71:56:93:c3 via vmx1
            Dec 23 14:19:02 firewall dhcpd: DHCPACK on 192.168.14.200 to f0:c3:71:56:93:c3 via vmx1
            Dec 23 14:19:02 firewall dhcpd: DHCPREQUEST for 192.168.14.200 from f0:c3:71:56:93:c3 via vmx1
            Dec 23 14:19:02 firewall dhcpd: DHCPACK on 192.168.14.200 to f0:c3:71:56:93:c3 via vmx1
            
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            • johnpozJ
              johnpoz LAYER 8 Global Moderator
              last edited by johnpoz

              @pyrodex said in Invalid DHCP pool - for LAN subnet 192.168.xx.0/23 detected. Please correct the settings in Services, DHCP Server:

              firewall php-fpm[350]: /services_dhcp.php

              There is where the error is coming from.. Not actually dhcpd, but why have no idea... Do you have any vips or anything.. You didn't set your own odd rules for dhcp on lan did you?

              Only thing off the top would be to get rid of all settings and start over.. Changing the range if you need to, and then moving it back to the /23 you want... For the life of me can not understand why your using /23 in the first place... Why would you not just use a /24? You don't seem to have that many clients that /24 would not be enough space.

              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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                pyrodex @johnpoz
                last edited by

                @johnpoz said in Invalid DHCP pool - for LAN subnet 192.168.xx.0/23 detected. Please correct the settings in Services, DHCP Server:

                @pyrodex said in Invalid DHCP pool - for LAN subnet 192.168.xx.0/23 detected. Please correct the settings in Services, DHCP Server:

                firewall php-fpm[350]: /services_dhcp.php

                There is where the error is coming from.. Not actually dhcpd, but why have no idea... Do you have any vips or anything.. You didn't set your own odd rules for dhcp on lan did you?

                Only thing off the top would be to get rid of all settings and start over.. Changing the range if you need to, and then moving it back to the /23 you want... For the life of me can not understand why your using /23 in the first place... Why would you not just use a /24? You don't seem to have that many clients that /24 would not be enough space.

                Size of the subnet is irrelevant since I have an IoT without the issue setup the same way. But in lieu of testing I disabled DHCP on the LAN, adjusted the RANGE first for a /24 and then when I saved it no error. I changed LAN from /23 to /24, went back in and enabled DHCP which showed the proper /24 subnet mask and all and the same error occurred but for the /24....

                Dec 23 18:35:51 firewall php-fpm[49585]: /services_dhcp.php: New alert found: Invalid DHCP pool  -  for LAN subnet 192.168.14.0/24 detected. Please correct the settings in Services, DHCP Server
                

                What is going on with this?

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                • johnpozJ
                  johnpoz LAYER 8 Global Moderator
                  last edited by johnpoz

                  I agree the /23 is irrelevant, just a really ODD choice ;) You can not possible have that many devices on each segment that a /23 is called for - do you? ;)

                  Yes the error is odd, have never seen it in the 10 some years using pfsense..

                  You don't have any vips or anything setup? Try moving away to a different range completely.. It doesn't say overlap any tunnels or remote networks for say openvpn? You don't have any routes setup for that range or overlap?

                  Lets call in the big guns @jimp and @Derelict and see if they have any ideas..

                  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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                  • P
                    pyrodex @johnpoz
                    last edited by

                    @johnpoz said in Invalid DHCP pool - for LAN subnet 192.168.xx.0/23 detected. Please correct the settings in Services, DHCP Server:

                    I agree the /23 is irrelevant, just a really ODD choice ;) You can not possible have that many devices on each segment that a /23 is called for - do you? ;)

                    Yes the error is odd, have never seen it in the 10 some years using pfsense..

                    You don't have any vips or anything setup? Try moving away to a different range completely..

                    Lets call in the big guns @jimp and @Derelict and see if they have any ideas..

                    I've got a pfblockerng VIP but the issue occurred even before the VIP was in place.

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                    • johnpozJ
                      johnpoz LAYER 8 Global Moderator
                      last edited by johnpoz

                      That normally defaults to 10.10.10 or something that shouldn't be a issue.. I was thinking something is overlapping... I did a query on the code for services_dhcp.php and I don't even see where that error would be called out..

                      Do you have anything else that could be possible overlapping that range in someway, a vpn tunnel network or remote, or something else... Is it possible to change it so something completely different say 192.168.100 or something that doesn't overlap any of your other networks.

                      If that works fine without any errors we can put it back to the 192.168.14, for sure we need to figure out what exactly is causing it.. Even if cosmetic which it seems to be since your saying dhcp is working. The error being generated is not all that helpful.. It sure is valid from a range point of view from what you have posted.

                      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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                      • GertjanG
                        Gertjan
                        last edited by

                        These are in comment lines before the error is spit out :

                                                        // If the user has changed the subnet from the interfaces page and applied,
                                                        // but has not updated the DHCP range, then the range to/from of the pool can be outside the subnet.
                                                        // This can also happen when implementing the batch of changes when the setup wizard reloads the new settings.
                        
                        .... some tests ...
                        
                                                                        // Even though the running interface subnet does not match the pool range,
                                                                        // the interface subnet in the config file contains the pool range.
                                                                        // We are somewhere part-way through a settings reload, e.g. after running the setup wizard.
                                                                        // services_dhcpdv4_configure will be called again later when the new interface settings from
                                                                        // the config are applied and at that time everything will match up.
                                                                        // Ignore this pool on this interface for now and just log the error to the system log.
                        
                        
                        

                        Btw : /etc/inc/services.inc

                        No "help me" PM's please. Use the forum, the community will thank you.
                        Edit : and where are the logs ??

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                        • johnpozJ
                          johnpoz LAYER 8 Global Moderator
                          last edited by johnpoz

                          So shouldn't error have gone away after he changed it to /24, etc.. ?

                          Good trackdown! I didn't think to look there ;)

                          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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                          • GertjanG
                            Gertjan
                            last edited by Gertjan

                            An error like this

                            Dec 23 08:47:35 firewall php-fpm[28463]: /services_unbound.php: New alert found: Invalid DHCP pool  -  for LAN subnet 192.168.14.0/23 detected. Please correct the settings in Services, DHCP Server
                            

                            misses nearly half the information - and that why it's triggered.

                            Compare this to the actual error text string :

                            $error_msg = sprintf(gettext('Invalid DHCP pool %1$s - %2$s for %3$s subnet %4$s/%5$s detected. Please correct the settings in Services, DHCP Server'), $poolconf['range']['from'], $poolconf['range']['to'], convert_real_interface_to_friendly_descr($dhcpif), $subnet, $ifcfgsn);
                            

                            Only variables %3$s - %4$s %5$ = 3, 4 and 5 print useful text, which are convert_real_interface_to_friendly_descr($dhcpif), $subnet and $ifcfgsn

                            These become 'LAN', '192.168.14.0' and '23' in your case.

                            Variable 1 and 2, in that pool, $poolconf['range']['from'] and $poolconf['range']['to'] are probably not defined and/or empty.
                            That triggers the error.

                            @pyrodex : check you config.xml and compare good relation between :

                            	<interfaces>
                            ....		<lan>
                            			<if>fxp0</if>
                            ....
                            			<enable></enable>
                            ....
                            			<ipaddr>192.168.1.1</ipaddr>
                            			<subnet>24</subnet>
                            

                            and

                            	<dhcpd>
                            		<lan>
                            			<range>
                            				<from>192.168.1.70</from>
                            				<to>192.168.1.253</to>
                            			</range>
                            ....
                            

                            Also, are there any 'sub' <pool> in :

                            	<dhcpd>
                            		<lan>
                            ....
                            			<pool>
                            				<range>
                            					<from>192.168.1.210</from>
                            					<to>192.168.1.220</to>
                            				</range>
                            

                            ?

                            Probably not related :
                            Take also a look at this :

                            @pyrodex said in Invalid DHCP pool - for LAN subnet 192.168.xx.0/23 detected. Please correct the settings in Services, DHCP Server:

                            Dec 23 14:18:16 firewall dhcpleases: Sending HUP signal to dns daemon(46048)

                            one second later :

                            Dec 23 14:18:17 firewall dhcpleases: Sending HUP signal to dns daemon(46048)
                            Dec 23 14:18:17 firewall dhcpleases: Sending HUP signal to dns daemon(46048)

                            Check your syslog for more "Sending HUP signal to dns daemon".
                            Unbound being restarted many times per minute is not good at all.

                            No "help me" PM's please. Use the forum, the community will thank you.
                            Edit : and where are the logs ??

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                            • P
                              pyrodex @Gertjan
                              last edited by

                              @Gertjan

                              <lan>
                                                      <descr><![CDATA[LAN]]></descr>
                                                      <if>vmx1</if>
                                                      <enable></enable>
                                                      <spoofmac></spoofmac>
                                                      <ipaddr>192.168.14.1</ipaddr>
                                                      <subnet>23</subnet>
                                                      <ipaddrv6>track6</ipaddrv6>
                                                      <track6-interface>wan</track6-interface>
                                                      <track6-prefix-id>1</track6-prefix-id>
                                              </lan>
                              
                               <lan>
                                                      <range>
                                                              <from>192.168.15.220</from>
                                                              <to>192.168.15.240</to>
                                                      </range>
                                                      <enable></enable>
                                                      <failover_peerip></failover_peerip>
                                                      <defaultleasetime>86400</defaultleasetime>
                                                      <maxleasetime></maxleasetime>                                                                                                      
                                                      <netmask></netmask>
                                                      <gateway></gateway>                                                                                                                          
                                                      <domain>lan</domain>                                                                                                                         
                                                      <domainsearchlist>lan;iot;dmz</domainsearchlist>                                                                                             
                                                      <ddnsdomain></ddnsdomain>                                                                                                                    
                                                      <ddnsdomainprimary></ddnsdomainprimary>                                                                                                      
                                                      <ddnsdomainkeyname></ddnsdomainkeyname>                                                                                                      
                                                      <ddnsdomainkeyalgorithm>hmac-md5</ddnsdomainkeyalgorithm>                                                                                    
                                                      <ddnsdomainkey></ddnsdomainkey>                                                                                                              
                                                      <mac_allow></mac_allow>                                                                                                                      
                                                      <mac_deny></mac_deny>                                                                                                                        
                                                      <ddnsclientupdates>allow</ddnsclientupdates>                                                                                                 
                                                      <tftp>192.168.14.31</tftp>                                                                                                                   
                                                      <ldap></ldap>                                                                                                                                
                                                      <nextserver>192.168.14.31</nextserver>                                                                                                       
                                                      <filename>pxelinux.0</filename>                                                                                                              
                                                      <filename32>syslinux32.efi</filename32>                                                                                                      
                                                      <filename64>syslinux64.efi</filename64>                                                                                                      
                                                      <rootpath></rootpath>                                                                                                                        
                                                      <numberoptions></numberoptions>  
                              

                              I fixed it myself by removing all my static maps and re-adding...

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                              • johnpozJ
                                johnpoz LAYER 8 Global Moderator
                                last edited by

                                So what what wrong with the statics? I looked through them I didn't see anything that was out of scope..

                                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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