I dont really understand the true nature of your problem, you are not being clear. But based on some assumptions - ARPD translates IP addresses into MAC Addresses RARPD translates MAC Addresses into IP Addresses. They both use the same IP-ARP table in the kernel and both get their answers from the target Host system. You ask for the Mac address associated with a certain IP address, ARPD broadcasts a request out on your local network for the system with that IP address to return it's mac address. RARPD does the reverse It might have been updated to also fetch the associated subnet mask. So they are only going to return what the actual host system supplies. All your affected systems might have to be upgraded to a TCP/IP version that supports IP Classless as that will always provide the true subnet mask as part of the packet header. I am presuming they fixed ARP/RARP to have this feature when they added in classless capabilities into the TCP/IP protocols The latest ARP table should provide an entry for storing the mask as well which will give you the proper reply. I would suspect that at least some of your systems are running only "Classed" versions of the original IP stack and are not up to the Classless level of code which added subnet masks. I am assuming your network is a subnetted class B which uses a Class C subnet mask to split apart the Class B address range into multiple Class C subnets. You have the subnet mask set properly on each machine to a Class C subnet mask, but when you RARP the table, you get back the default Class B subnet mask instead of the assigned Class B. This means the source is either not sending a subnet mask and your local systems is using the default mask for a Class B or your linux system does not have a Classless version of the ARP suite. It sounds like you might be trying to delete an entry from the RARP/ARP table???? > -----Original Message----- > From: redhat-list-admin@xxxxxxxxxx > [mailto:redhat-list-admin@xxxxxxxxxx]On Behalf Of Julie Xu > Sent: Wednesday, October 22, 2003 8:54 PM > To: redhat-list@xxxxxxxxxx > Cc: j.xu@xxxxxxxxxx > Subject: rarpd & netmask > > > Greeting, > > can rarpd give a remove install client ip address with netmask? > > I seems have problem with netmask because the ip address is > class B and I > need a class C netmask. Is any way to fix this problem? > > Any comments will be appreciated > > Thanks in advance > > > Julie Xu > > Data Communication Team > Information Technology Directorate > University of Western Sydney > Locked Bag 1797 > Penrith South DC NSW 1797 > > > > > -- > redhat-list mailing list > unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe > https://www.redhat.com/mailman/listinfo/redhat-list > -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list
