topic Re: How t o configure DHCPv6 client to start at bootup in Operating System - Linux

How t o configure DHCPv6 client to start at bootup

priyanka_2 — Mon, 28 May 2007 06:52:11 GMT

Can anyone please tell me how to enable Dhcpv6 client at startup of the system.
I tried with chkconfig. But chkconfig list is not listing the dhcp6c to make it on.

My NIC card is enabled for automatic configuration only.
I'm getting ip address only when I execute the command 'dhcp6c -f eth0'.

once I got the ip, if I restart the interface, then i'm not able to get ip address from the dhcp server. I'm getting only when i run the cmd 'dhcp6c -f eth0' again.

Re: How t o configure DHCPv6 client to start at bootup

Stuart Browne — Mon, 28 May 2007 07:16:43 GMT

Things to note:

if [ "${NETWORKING_IPV6}" = "yes" ]; then
/etc/sysconfig/network-scripts/ifup-ipv6 ${CONFIG}
if [[ "${DHCPV6C}" = [Yy1]* ]] && [ -x /sbin/dhcp6c ]; then
/sbin/dhcp6c ${DEVICE};
dhcp6_pid=(`/bin/ps -eo 'pid,args' | /bin/grep "dhcp6c ${DEVICE}" | egrep -v grep`);
echo ${dhcp6_pid[0]} > /var/run/dhcp6c_${DEVICE}.pid
fi;
fi

This is from '/etc/sysconfig/network-scripts/ifup-eth'.

Basically it's saying that '/etc/sysconfig/network' needs to have 'NETWORKING_IPV6=yes'. It also needs '/etc/sysconfig/network-scripts/ifcfg-eth0' (or whichever interface you're using) have 'DHCPV6C=Yes' as well.

Refer to '/usr/share/doc/initscripts-*/sysconfig.txt'.

Re: How t o configure DHCPv6 client to start at bootup

priyanka_2 — Mon, 28 May 2007 07:46:46 GMT

Thanks Stuart

I have already done those configurations changes to /etc/sysconfig/network-scripts/ifup-eth0 file.

IPV6INIT=yes
DHCP6C=yes

I had these two lines in that file. After that also I'm facing the same problem.