Sir, Mr Ed Greshko has reminded me about academic questions. I agree with him. But it is not purely an academic question, as would be clear from following real life situation of my office. BTW, I have read, everything about ARP, MAC address and how things work on wire. But I thought, I must also also ask experts. Here is the configuration that we have in our office. This configuration is also working. Switch _______________ | | | | | | | | | ---- DSL Router ---- Internet | | | | 203.147.175.12 | | | | | | | ----------Mail Server (multihomed) | | | 203.147.175.13 | | | 192.168.10.3 | | | | | -------- 192.168.10.4 | ----------- 192.168.10.5 ---------------- Hub & computers of address 192.168.10.* You see, there are two class C networks. One is that of 203.147.175.0 The other is 12.168.10.0. Both these networks are passing thru same switch. I just wanted to be sure that there is nothing wrong with this configuration. So, I would request your comments please. bye shiraz __________________________________ Do you Yahoo!? Yahoo! Mail - Find what you need with new enhanced search. http://info.mail.yahoo.com/mail_250 -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list