[Bug 1930917] Re: Latest isc-dhcp-server rejects proper dhcpd.conf

[Launchpad Bug Tracker]

Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: isc-dhcp (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/1930917

Title:
  Latest isc-dhcp-server rejects proper dhcpd.conf

Status in isc-dhcp package in Ubuntu:
  Confirmed

Bug description:
  Ubuntu 21.04 on Raspberry Pi. isc-dhcp-server was working just fine
  with version V4.4.1-2.2-ubuntu6.

  I got updated to V4.4.1-2.2ubuntu6.1 and now isc-dhcp-server refuses
  to start with the error "Can't clone pool group".

  I backed off to the prior version and it's working as before, so
  something in the V4.4.1-2.2ubuntu6.1 update has broken config file
  parsing.

  Here's the subnet section of the failing config. Removing the "pool"
  declaration from the subnet declaration eliminates the error, but of
  course, that's not a working configuration.

  subnet 192.168.92.0 netmask 255.255.255.0 {
      option domain-search "foo.com", "dyn.foo.com";
      option broadcast-address 192.168.92.255;
      allow duplicates;
      ddns-updates off;
      pool {
          ddns-updates on;
          allow unknown-clients;
          option domain-name "dyn.foo.com";
          ddns-rev-domainname "dhcp";
          default-lease-time 86400;
          max-lease-time 86400;
          range 192.168.92.101 192.168.92.127;
      }
  }

  This was also noted at least twice in the Ubuntu forums:
  https://ubuntuforums.org/showthread.php?t=2462984 and
  https://ubuntuforums.org/showthread.php?t=2462930

  Thanks

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