Kindly help me in understanding the observation of following experiment :- -------- -------- | | | | | H1 |---------| H2 | | | | | -------- -------- H1 and H2 are two Linux host. IP of H1 = 10.0.0.1 MAC of H1 = 00:00:00:00:00:01 IP of H2 = 10.0.0.2 MAC of H2 = 00:00:00:00:00:02 Now I did the following configurations. 1) In host H1 ------------- I added a static arp entry in the arp cache of the host H1 as arp -s 10.0.0.3 00:00:00:00:00:02. (ie) the mac address for 10.0.0.3 as H2's mac address. 2) In host H2 ------------- Enabled IP forwarding. Then from host H1, I made a ping 10.0.0.3. Here I found that ICMP request from host H1 reaches host H2, and host H2 sends the following as ICMP redirect messages. >From 10.0.0.2: icmp_seq=1 Redirect Host (New nexthop: 10.0.0.3) >From 10.0.0.2: icmp_seq=2 Redirect Host (New nexthop: 10.0.0.3) >From 10.0.0.2: icmp_seq=3 Redirect Host (New nexthop: 10.0.0.3) The above behaviour is of Linux functionality. Here the redirect uses the next-hop address as 10.0.0.3. What is the reason of it ? It seems confusing because the ping was send just to that address. - R. Rajasekaran. __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com
