Find DHCPv6 server's IPv6 address

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03-20-2017

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Find DHCPv6 server's IPv6 address

I want to find out the DHCPv6 server's ip address in the network. I went through the lease files but could find only duid/server-id and not the IPv6 address of the dhcp server. And I couldn't find any commands to get that information. Is there a way to get the DHCPv6 server's IPv6 address?

If I configured my machine to get an IPv4 dhcp address, I can see the lease files having the dhcp server's address. This made me think.. whether DHCP6 servers really expose their IPv6 addresses?

Basically looking for commands or system utility apis to get DHCPv6 server's IPv6 address in suse(sles11,sles12,sled) and red-hat(rhel6.8 and rhel7).
Thanks in advance for your help..

bshalini

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LEARN ABOUT SUSE

dhcp6s

dhcp6s(8)						      System Manager's Manual							 dhcp6s(8)

NAME

       dhcp6s - DHCPv6 server daemon

SYNOPSIS

       dhcp6s [ -vf ] [ -c <pathspec> ] [ -p <pathspec> ] <interface>

DESCRIPTION

       dhcp6s is an implementation of the DHCPv6 server.

       dhcp6s  provides  IPv6  addresses and prefix assginment administrative policy and configuration information for DHCPv6 clients. dhcp6s also
       manages those addresses and prefixes, such as IPv6 addresses, prefixes, DNS server addresses, or ntp server addresses.

       Interface names are specified according to your operating system's conventions.	On Linux, this is typically eth0, eth1, and so on.

OPTIONS

       -c pathspec
	      Specifies the dhcp6s configuration file.

       -p pathspec
	      Specifies the dhcp6s PID file.

       -v     Enables dhcp6s to print verbose debugging messages.

       -f     Enables dhcp6s to work as a foreground application.  This option is helpful for debugging.

FILES

       /etc/dhcp6s.conf
	      Contains dhcp6s configurations, such as allow unicast, allow rapid-commit, specify valid-life-time, or specify preferred-life-time.

       /var/lib/dhcpv6/dhcp6s_duid
	      Contains the dhcp6s server's DUID.

       /var/lib/dhcpv6/server6.leases
	      Contains all dhcp6c clients' IPv6 address and prefix leasing information and states.

SEE ALSO

       dhcp6s.conf(5)

ERRORS

       Check /var/log/messages if there are errors.

BUGS

       Report bugs via http://fedorahosted.org/dhcpv6/

AUTHORS

       See http://fedorahosted.org/dhcpv6/wiki/Authors

																	 dhcp6s(8)

Red Hat