IP destination address for DHCPOFFER?
dan.sahlin at raycore-fos.com
Tue Jun 26 12:07:37 UTC 2007
What is the proper IP destination address for a DHCPOFFER message?
ISC DHCP v3.0.4 uses the new proposed IP address as the destination
address in the DHCPOFFER message, i.e. the same as the yiaddr.
One DHCP client I have (a managed fiber converter) ignores this
DHCPOFFER message as it expects the broadcast IP adress (
In "The DHCP Handbook" on top of page 107 the DHCPOFFER destination
address is shown as the broadcast address. However, the text on the
same page says:
"This message is sent to the Ethernet broadcast address
ff:ff:ff:ff:ff:ff and to the new assigned IP address 192.168.11.25."
I do not find the RFC2131 very clear either regarding the proper
addressing of DHCPOFFER. In section 3.1.2 it simply says
"Each server may respond with a DHCPOFFER message that includes an
available network address in the 'yiaddr' field..."
So how should the standards properly be interpreted regarding the IP
and MAC adresses of the DHCPOFFER message?
email: dan.sahlin at raycore-fos.com
phone: +46 70 5198187
More information about the dhcp-users