Re: Changing the DHCP address of a machine on my Local LAN

On Sat, Mar 06, 2010 at 18:31:32 -0500,
Sam Varshavchik <mrsam@xxxxxxxxxxxxxxx> wrote:

DHCP requests are, by definition, sent to the local link broadcast
address, and can only be received by DHCP servers on the same
network segment. DHCP requests cannot cross a router or hop to a
different network segment. A DHCP server is always required to be on
the same network segment as its clients, in order to receive DHCP
requests and manage the clients.

Cheapo routers are often set up as bridges. So it could be that his ISP
supplied device and his device are both seeing the dhcp packets.
--
users mailing list
users@xxxxxxxxxxxxxxxxxxxxxxx
To unsubscribe or change subscription options:
https://admin.fedoraproject.org/mailman/listinfo/users
Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines

Relevant Pages

  • Re: DHCP Relay Agent
    ... ISA Server 2004 auf einem Windows 2003 Server aufgesetzt ... Der DHCP Relax agent ist Installiert und kennt die beiden sich im internen ... DHCP Requests von Clients nach Localhost ... DHCP Acknolledge von Localhost nach Clients ...
    (microsoft.public.de.german.isaserver)
  • Re: ip helper for a specific address
    ... The workstation sends DHCP request when it HAS NO IP ADDRESS. ... It means that you cannot filter IP Helper requests based on IP addresses. ... If you want to have a different DHCP servers for different PCs, you may install two or more DHCP servers, configure certain MAC addresses to get a specific IP addresses, and configure multiple "ip helper" addresses on your router. ... In this case your DHCP requests will be forwarded to ALL DHCP servers, but the only DHCP server with specific configuration will reply to certain requests. ...
    (comp.dcom.sys.cisco)
  • Re: ip helper for a specific address
    ... IP HELPER forwards DHCP REQUESTS. ... install two or more DHCP servers, ... DHCP requests will be forwarded to ALL DHCP servers, ...
    (comp.dcom.sys.cisco)
  • Re: DHCP Server
    ... One of the machines, that is part of the domain, is the one getting the DHCP address outside of the scope. ... When looking at all network activity, I see the DHCP requests from the other machines and the ack/reply from the server with their DHCP lease info. ... This error may indicate lack of support for address-resolution on the network, or an error condition on the local machine. ...
    (microsoft.public.windows.server.sbs)
  • Re: ip helper for a specific address
    ... IP HELPER forwards DHCP REQUESTS. ... install two or more DHCP servers, ... DHCP requests will be forwarded to ALL DHCP servers, ...
    (comp.dcom.sys.cisco)