Friday, 2 November 2012

How to enable DHCP Server in Linux Fedora core 16 for both IPv4 and IPv6


How to enable DHCP Server in Linux Fedora core 16 for both IPv4 and IPv6

We need to run two instances of dhcp to serve IPv4 and IPv6 separately, also we should have two config files for this.

1) yum install dhcp-common

    yum install dhcp

2)  cd /etc/dhcpd/


Copy sample files


# cp /usr/share/doc/dhcp*/dhcpd.conf.sample dhcpd.conf


#cp /usr/share/doc/dhcp*/dhcpd6.conf.sample dhcpd6.conf



3) configure the subnets for both IPv4 and IPv6 in config files


# vim /etc/dhcp/dhcpd.conf


subnet 192.16.2.0 netmask 255.255.255.0 {

  range 192.16.2.10 192.16.2.80;
  option routers 192.168.2.1;
  option broadcast-address 192.168.2.255;
  default-lease-time 600;
  max-lease-time 7200;
}



# vim /etc/dhcp/dhcpd6.conf



subnet6 2001:db8:1:0::/64 {

        range6 2001:db8:1:0::10 2001:db8:1:0::80;

        range6 2001:db8:1:0:: temporary;

        prefix6 2001:db8:1:0:: 2001:db8:1:0:: /64;
      
           # Override of the global definitions,
        # works only when a resource (address or prefix) is ass
#       option dhcp6.name-servers 3ffe:501:ffff:101:200:ff:fe00

}


Save both the files


4) Start the servers

  dhcpd -4 -cf /etc/dhcp/dhcpd.conf

  dhcpd -6 -d -cf /etc/dhcp/dhcp6.conf

Got error-> "Can't open lease file /usr/local/var/db/dhcp6.lease"


5) vim /etc/dhcp/dhcpd6.conf'

change log path :

dhcpv6-lease-file-name "/var/lib/dhcpd/dhcpd6.leases";

6) Generate blank file

   touch /var/lob/dhcpd/dhcpd6.leases

7) Kill the servers, if running and start again the servers

   dhcpd -4 -cf /etc/dhcp/dhcpd.conf

  dhcpd -6 -d -cf /etc/dhcp/dhcp6.conf


8) Verify by making any Windows 7 Windows PC as IPv6 Client, it should get the ip address from this Server.


Keep Learning, Keep Breaking !!!!

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