dhcp6.leases permission denied

김무성 kimms at infosec.co.kr
Tue May 3 02:41:05 UTC 2011

Hello list.

I’m a newbie.

I’m configuring my DHCPv6 server on my ubuntu 11.04

But there is an error. 



Can't open lease database /var/lib/dhcp/dhcpd6.leases: Permission denied --

check for failed database rewrite attempt!


So I create dhcpd6.leases file in /var/lib/dhcp

But it’s continue.


How to relsove this problem?





Give some information about my configure.



I run dhcpd by root. And dhcpd6.leases file’s permission is -rw-r--r--.

I installed using “apt-get install isc-dhcp-server”

And execute dhcp using “/usr/sbin/dhcpd -6 -f -cf /etc/dhcp/dhcpd.conf


root at gateway:/var/lib/dhcp# ifconfig eth0

eth0      Link encap:Ethernet  HWaddr 00:15:17:24:c8:48

          inet6 addr: fe80::215:17ff:fe24:c848/64 Scope:Link

          inet6 addr: 2001:2b8:8:1::1/64 Scope:Global


          RX packets:73966 errors:0 dropped:10 overruns:0 frame:0

          TX packets:738 errors:0 dropped:0 overruns:0 carrier:0

          collisions:0 txqueuelen:1000

          RX bytes:5930928 (5.9 MB)  TX bytes:607921 (607.9 KB)

          Interrupt:17 Memory:88180000-881a0000


root at gateway:/var/lib/dhcp# vi /etc/dhcp/dhcpd.conf

ddns-update-style none;

option domain-name "example.org";

option domain-name-servers ns1.example.org, ns2.example.org;

default-lease-time 600;

max-lease-time 7200;

log-facility local7;

subnet6 2001:2d8:8:1::/64 {

range6 2001:2d8:8:1::200 2001:db8:0:1::1000;







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