Troubleshooting: no free leases

[Bill Shirley]

Also, I don't think your "nes" class will ever match.  You're comparing the hardware
address to a string.  Here's a snippet that might be useful:
# ------------------------------------------------------------------------------
class "Apple_PC" {
         match if (
                 substring(hardware, 1,3) = 38:c9:86
                 or substring(hardware, 1,3) = 00:26:08
         );
}
# ------------------------------------------------------------------------------

# ------------------------------------------------------------------------------
class "mobile_device" {
         match if (
                 option host-name ~~ "dhcpcd"
                 or option host-name ~~ "android"
                 or option host-name ~~ "iphone"
                 or option host-name ~~ "iphone-2"
                 or option host-name ~~ "ipod"
                 or option host-name ~~ "ipad"
         );

# for those devices using the default name:
         if (lcase(option host-name) = "iphone") { ddns-hostname = concat("iPhone-", binary-to-ascii(16, 8, "", 
substring(hardware, 4, 3))); }
         if (lcase(option host-name) = "iphone-2") { ddns-hostname = concat("iPhone2-", binary-to-ascii(16, 8, "", 
substring(hardware, 4, 3))); }
         if (lcase(option host-name) = "ipod") { ddns-hostname = concat("iPod-", binary-to-ascii(16, 8, "", substring(hardware, 
4, 3))); }
         if (lcase(option host-name) = "ipad") { ddns-hostname = concat("iPad-", binary-to-ascii(16, 8, "", substring(hardware, 
4, 3))); }
}
# ------------------------------------------------------------------------------

Bill


On 7/21/2017 5:10 AM, Bill Shirley wrote:
> My guess is your client is both a member of "win" and "wp" which, according to
> pool definitions, can't be satisfied.
>
> Bill
>
>
> On 7/20/2017 10:27 PM, timeless wrote:
>> Hi,
>> fwiw, I just upgraded isc-dhcp-server, I'm now running: 4.3.1-6+deb8u2 (things were working fine before that point, I'm not 
>> sure offhand what version I was running previously,  unfortunately). And I got the problem below. I've since upgraded to 
>> 4.3.5-3 (Debian stretch) without any improvement.
>>
>> And I hit "no free leases".
>> I'm hoping someone could help me figure out what's going wrong / how to fix it.
>>
>> This is most of my dhcpd.conf [1] file.
>>
>> The client I'm trying to get a lease for is a modern.ie <http://modern.ie> Windows10 VM [2] running in VirtualBox 5.1.24 on 
>> macOS Sierra w/ guest additions Bridging an Thunderbolt Ethernet Adapter [MAC address: 08:00:27:d0:ad:b7]
>> WireShark shows the windows 10 system sends:
>>   MSEDGEWIN10<.MSFT 5.07
>> WireShark reports it as:
>>   Client FQDN: MSEDGEWIN10
>>   vendor-class-data: MSFT 5.0
>> ... which should match my "win" class.
>>
>> None of my pool ranges appear "full" [3].
>>
>> The class match is not logged.
>>
>> For comparison, here's background logging [4], and what I get when I troubleshoot the Windows 10 network [5].
>>
>> pool 10.4.6.1 .. 10.4.6.254 has allow unknown-clients, which is where it would go if it wasn't matched.
>>
>> One basic question I have is: How do i tell if a pool is "full"?
>>
>> It would be very helpful to me for debugging if I could get isc-dhcp-server to "explain" how it decided that it had no more 
>> space.
>>
>> From my naive perspective none of my pools are full, but I'd rather be able to ask isc-dhcp-server its opinion.
>>
>> I also tried stopping isc-dhcp-server
>>
>>
>> There's no configuration for a failover pair, and the word "failover" isn't present in my config file.
>>
>> I read: release notes [6] -- which shows that the logging was introduced in 3.0rc12
>>
>> I skimmed through: KB looking for "no free leases" [7] and the kb articles all seem to be about performance or failover.
>>
>> Thanks
>>
>> [1] https://www.irccloud.com/pastebin/OU5bsfhX/%2Fetc%2Fdhcp%2Fdhcpd.conf
>> [2] https://developer.microsoft.com/en-us/microsoft-edge/tools/vms/
>> [3] https://www.irccloud.com/pastebin/jibZxPPp/dhcpd.leases.trimmed
>> [4] https://www.irccloud.com/pastebin/YJ6Nt04h/
>> [5] https://www.irccloud.com/pastebin/HWE9aEvs/
>> [6] https://kb.isc.org/article/AA-01357/0/DHCP-4.3.4b1-Release-Notes.html
>> [7] 
>> https://kb.isc.org/index.php?/searchResults/0/10/fU_NCoMwDH4V6RPYOeYWbxMEz-4uVSMK1Y42jg3x3ZeqA0-75fuSfD8KpITZgQxBOFS27h74JpEwcwYxmqC1iIFG5dB59vo7y0cPIxBKaz9deJqoM9YDFtu5WlHe8KcCtukhZPYEIpIiWdgi5qfmVeyCxVSlavXmE7Pq-1iNIsx6TWj3AOxYUj-gh7dtX7bWDAfneKfJHEjJsvXkyAxZj3pLFcLMQbgq_a3tc5gnjvdPaho2rrjJ8gU~ 
>> <https://kb.isc.org/index.php?/searchResults/0/10/fU_NCoMwDH4V6RPYOeYWbxMEz-4uVSMK1Y42jg3x3ZeqA0-75fuSfD8KpITZgQxBOFS27h74JpEwcwYxmqC1iIFG5dB59vo7y0cPIxBKaz9deJqoM9YDFtu5WlHe8KcCtukhZPYEIpIiWdgi5qfmVeyCxVSlavXmE7Pq-1iNIsx6TWj3AOxYUj-gh7dtX7bWDAfneKfJHEjJsvXkyAxZj3pLFcLMQbgq_a3tc5gnjvdPaho2rrjJ8gU%7E>
>>
>>
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>
>
>
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