[Bug 824024] Re: "semicolon expected" parsing errors on "cltt" in dhcpd.leases

[Stéphane Graber]

Could you try with 12.04? We've since upgraded to the long term support
release of isc-dhcp that brought a lot of bugfixes though sadly not in a
way that lets me easily check whether this one was fixed...

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

** Changed in: isc-dhcp (Ubuntu)
   Importance: Undecided => Medium

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Title:
  "semicolon expected" parsing errors on "cltt" in dhcpd.leases

Status in “isc-dhcp” package in Ubuntu:
  Incomplete

Bug description:
  Hey

  This is about bogus parsing of the leases file by dhcpd.

  I don't know whether this is BOOTP specific or not, but I've setup isc-dhcp-server (dhcpd) to accept bootp clients with this config:
  subnet 172.16.0.0 netmask 255.240.0.0 {
    range dynamic-bootp 172.17.0.0 172.17.255.255;
    option domain-name-servers google-public-dns-a.google.com, google-public-dns-b.google.com;
    option routers 172.16.0.254;
    option broadcast-address 172.31.255.255;
    default-lease-time 600;
    max-lease-time 7200;
    filename "xyz";
  }

  eth1 is setup as follows in /etc/network/interfaces:
  iface eth1 inet static
      address 172.16.0.254
      netmask 255.240.0.0

  The BOOTP client is connected with a direct ethernet cable from an USB
  ethernet adapter on my laptop to its first network interface and is
  running RedBoot as a bootloader (it's an ARM box).

  When dhcpd starts the first time, it looks something like this:
  Aug 10 17:25:06 localhost dhcpd: Internet Systems Consortium DHCP Server 4.1.1-P1
  Aug 10 17:25:06 localhost dhcpd: Copyright 2004-2010 Internet Systems Consortium.
  Aug 10 17:25:06 localhost dhcpd: All rights reserved.
  Aug 10 17:25:06 localhost dhcpd: For info, please visit https://www.isc.org/software/dhcp/
  Aug 10 17:25:06 localhost dhcpd: Wrote 0 leases to leases file.

  then eventually the BOOTP request comes in when the device boots:
  Aug 10 17:25:29 localhost NetworkManager[1190]: <info> (eth1): carrier now ON (device state 10)
  Aug 10 17:25:29 localhost kernel: [21893.809257] asix 2-1.4:1.0: eth1: link up, 100Mbps, full-duplex, lpa 0xC1E1
  Aug 10 17:25:30 localhost dhcpd: BOOTREQUEST from 00:14:fd:10:38:9a via eth1
  Aug 10 17:25:30 localhost dhcpd: BOOTREPLY on 172.17.0.0 to 00:14:fd:10:38:9a via eth1

  I run a network trace in parallel that shows that *two* BOOTP requests
  come in with one second of interval, looking pretty much identical.
  The second one is immediately answered with a lease.

  Poking /var/lib/dhcp/dhcpd.leases at this point shows *two* entries for 172.17.0.0 looking something like:
  lease 172.17.0.0 {
    starts 3 2011/08/10 15:25:30;
    ends never;
    cltt 3 2011/08/10 15:25:30;
    binding state free;
    hardware ethernet 00:14:fd:10:38:9a;
  }

  this is listed twice with same IP and MAC address.

  If I then restart dhcpd, I get:
  Aug 10 17:31:30 localhost dhcpd: Internet Systems Consortium DHCP Server 4.1.1-P1
  Aug 10 17:31:30 localhost dhcpd: Copyright 2004-2010 Internet Systems Consortium.
  Aug 10 17:31:30 localhost dhcpd: All rights reserved.
  Aug 10 17:31:30 localhost dhcpd: For info, please visit https://www.isc.org/software/dhcp/
  Aug 10 17:31:30 localhost dhcpd: /var/lib/dhcp/dhcpd.leases line 9: semicolon expected.
  Aug 10 17:31:30 localhost dhcpd:   cltt
  Aug 10 17:31:30 localhost dhcpd:    ^
  Aug 10 17:31:30 localhost dhcpd: /var/lib/dhcp/dhcpd.leases line 17: semicolon expected.
  Aug 10 17:31:30 localhost dhcpd:   cltt
  Aug 10 17:31:30 localhost dhcpd:    ^
  Aug 10 17:31:30 localhost dhcpd: Wrote 1 leases to leases file.

  and the lease file now has only one entry like:
  lease 172.17.0.0 {
    starts 3 2011/08/10 15:25:30;
    binding state free;
    hardware ethernet 00:14:fd:10:38:9a;
  }

  There are two things wrong here:
  * two entries in the lease file, not sure why
  * can't parse its own leases on restart ("end" and "cltt" params)

  Cheers,

  ProblemType: Bug
  DistroRelease: Ubuntu 11.10
  Package: isc-dhcp-server 4.1.1-P1-17ubuntu5
  Uname: Linux 3.0.0-0300rc1-generic x86_64
  Architecture: amd64
  Date: Wed Aug 10 17:32:19 2011
  ProcEnviron:
   LANGUAGE=fr_FR:fr:en_GB:en
   PATH=(custom, user)
   LANG=fr_FR.UTF-8
   SHELL=/bin/zsh
  SourcePackage: isc-dhcp
  UpgradeStatus: Upgraded to oneiric on 2009-12-07 (611 days ago)
  mtime.conffile..etc.dhcp.dhcpd.conf: 2011-08-10T17:23:15.277158

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