My ISP is changing my server IP address. The old one will stay available to me for awhile. I interface to the ISP via cable modem.
I thought a good way to transition seamlessly would be to use IP alias to set up the new interface, then make the DNS changes and let them work their way thru, then reconfigure to just use the new address. I recompiled the kernel with IP aliasing, and used the appropriate ifconfig commands as explained in the howto. This is a busy machine with 2 ethernet cards. eth0 is used for the internal network. The current IP address is 206.5.73.128; the new one is 206.5.72.119. Here's the output of netstat -nr (with a few changes to obscure the actual addresses): Destination Gateway Genmask Flags MSS Window irtt Iface 206.5.72.119 0.0.0.0 255.255.255.255 UH 1500 0 0 eth1:0 206.5.73.128 0.0.0.0 255.255.255.255 UH 1500 0 0 eth1 192.168.0.1 0.0.0.0 255.255.255.255 UH 1500 0 0 eth0 192.168.0.0 0.0.0.0 255.255.255.0 U 1500 0 0 eth0 206.5.73.0 0.0.0.0 255.255.255.0 U 1500 0 0 eth1 206.5.72.0 0.0.0.0 255.255.255.0 U 1500 0 0 eth1:0 127.0.0.0 0.0.0.0 255.0.0.0 U 3584 0 0 lo 0.0.0.0 208.3.73.1 0.0.0.0 UG 1500 0 0 eth1 My understanding is that both routers for both the 206.5.73.0 subnet and the 206.5.72.0 subnet are 'there' on the other side of the cable modem. When I ping the router for the 206.5.72.0 subnet (206.5.72.1) I get the following: PING 206.5.72.1 (206.5.72.1): 56 data bytes ping: sendto: Operation not permitted ping: wrote 206.5.72.1 64 chars, ret=-1 Why is this? What can I do to accomplish what I want? Thanks for your help. Michael Laing
