on 7-31-2008 12:24 PM Tim Utschig spake the following: > On 07/31/08 12:02, Scott Silva wrote: >> The other answer is to get ISC dhcpd to honor the broadcast flag, and >> broadcast all packets instead of unicasting the answer packets. That I >> can't find a setting for. > > I have no Vista clients to test with, but have you tried > "always-broadcast on;" ? > > From "man dhcpd.conf" on CentOS 5.2: > > always-broadcast flag; > > The DHCP and BOOTP protocols both require DHCP and BOOTP clients > to set the broadcast bit in the flags field of the BOOTP > message header. Unfortunately, some DHCP and BOOTP clients do > not do this, and therefore may not receive responses from the > DHCP server. The DHCP server can be made to always broadcast > its responses to clients by setting this flag to 'on' for the > relevant scope; relevant scopes would be inside a conditional > statement, as a parameter for a class, or as a parameter for a > host declaration. To avoid creating excess broadcast traffic > on your network, we recommend that you restrict the use of this > option to as few clients as possible. For example, the > Microsoft DHCP client is known not to have this problem, as are > the OpenTransport and ISC DHCP clients. > SO... I have to flood my network with broadcast traffic or pay the microsoft extortion... Bill strikes again! Thanks for that. I had been reading the dhcp man page (I should say book! What a long one.) I guess I missed that. I'll have to set any Vista clients to named hosts so I can limit the traffic. According to that man page, ISC implies that Vista is broken, and Microsoft implies that ISC is broken. Were playing the blame game again! How fun! ;-P And I thought it was going to get boring... -- MailScanner is like deodorant... You hope everybody uses it, and you notice quickly if they don't!!!! -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 258 bytes Desc: OpenPGP digital signature URL: <http://lists.centos.org/pipermail/centos/attachments/20080731/51f345af/attachment-0003.sig>