Comment 8 for bug 1107686

After the last update to "isc-dhcp-server 4.2.4-1ubuntu10.2", my dhcpd stopped working and I had for first time the "Open a socket for LPF: Permission denied" error. I applied the workaround proposed in #2 and dhcpd is working again:

>> adding "network packet raw" to /etc/apparmor.d/usr.sbin.dhcpd
>> sudo /etc/init.d/apparmor reload"

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intronauta@Inspiron-N5010:~$ apt-cache policy isc-dhcp-server
isc-dhcp-server:
  Installed: 4.2.4-1ubuntu10.2
  Candidate: 4.2.4-1ubuntu10.2
  Version table:
 *** 4.2.4-1ubuntu10.2 0
        500 http://archive.ubuntu.com/ubuntu/ quantal-proposed/main amd64 Packages
        100 /var/lib/dpkg/status
     4.2.4-1ubuntu10.1 0
        500 http://archive.ubuntu.com/ubuntu/ quantal-updates/main amd64 Packages
     4.2.4-1ubuntu10 0
        500 http://archive.ubuntu.com/ubuntu/ quantal/main amd64 Packages
intronauta@Inspiron-N5010:~$ lsb_release -rd
Description: Ubuntu 12.10
Release: 12.10