System log file is filling up with dhclient messages.

Products

• SSL Visibility Appliance Software

Issue/Introduction

The system log file is full of messages similar to the following:

Sep  9 17:03:14 Server_Name dhclient: XMT: Solicit on eth0, interval 129930ms.
Sep  9 17:05:24 Server_Name dhclient: XMT: Solicit on eth0, interval 130390ms.
Sep  9 17:07:34 Server_Name dhclient: XMT: Solicit on eth0, interval 131150ms.
Sep  9 17:09:46 Server_Name dhclient: XMT: Solicit on eth0, interval 127810ms.
Sep  9 17:11:53 Server_Name dhclient: XMT: Solicit on eth0, interval 114030ms.
Sep  9 17:13:48 Server_Name dhclient: XMT: Solicit on eth0, interval 127660ms.
Sep  9 17:15:55 Server_Name dhclient: XMT: Solicit on eth0, interval 112770ms.
Sep  9 17:17:48 Server_Name dhclient: XMT: Solicit on eth0, interval 114860ms.


What are these messages and what can I do about them?

Resolution

These are DHCP requests coming from a Management Interface.  If you have your Management Interface configured with an IPv4 IP address, but the interface is looking for an IPv6 DHCP address.  If you are not currently using IPv6 on your network or do not wish to manage the appliance with an IPv6 address you can disable the requests.  In order to do this go to the localhost.localdomain drop down on the right side of the GUI then click on Management Network.  Under the IPv6 Settings box choose Disable under mode.  This will disable the outgoing IPv6 DHCP requests from the appliance.