Trying to configure Reserved IP but client MAC address not available

David Elliott david.elliott at
Fri Sep 25 20:29:56 UTC 2015

I am trying to use ISC-DHCP version 4.3.1 running on Ubuntu 12.4 to hand
out same IP address to a set of 5-10 VPN clients.  VPN device is Cisco ASA
5520 and I have the DHCP server configured in the ASA tunnel-group and the
network-scope configured in the Group-policy

ASA sends DHCPDISCOVER with MAC Address  from interface on the ASA, but
dhcp-client-identifier= \000cisco-001b.d5e8.eb93-A000140611-Trusted\000
I tried substituting dhcp-client-identifier instead of hardware ethenet in
host statement, as follows,

host test-Elliott-Lenovo-wireless {
          dhcp-client-identifier cisco-001b.15e8.cb93-A0001140611-Trusted;

but that did not work.

1. Any ideas how to assign / match client since to assign  reserved IP when
I cannot determine the client MAC ?

*God still works miracles!!   We strive to provide you the best possible
*If I have not provided you the excellent service you deserve, please
contact my manager, Lynn Goolsby at lynn.goolsby at or
 615-277-5892 <615-277-5892>*

David Elliott
Advanced Systems Engineer
Infrastructure Services Team

LifeWay Christian Resources
One LifeWay Plaza
Nashville, TN  37234-0130
(615)277-8148    fax: (615) 251-5900
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <>

More information about the dhcp-users mailing list