I hope I am not sending to the wrong address but here goes. :)
I need to be able to alias an IP and route to another IP. For example..
I have a computer behind my BSD server with an IP of 1.2.3.4 and it
requires a gateway IP of 1.2.3.1. So I simply issue an ifconfig en1
1.2.3.1 alias. But this results in the entire 1.x.x.x subnet to become a
part of my server's network.
I've been able to do this in Redhat Linux where I alias the gateway and
then route the second address (1.2.3.4) with a gateway of 0.0.0.0 and a
netmask of 255.255.255.255 on the en1 (or for linux the eth1) network.
This results in just the 1.2.3.1 and 1.2.3.4 IPs existing on my network
and it will still go out to 1.4.5.3 (just a random example IP) on the
internet through en0 (If I have natd enabled).
To give you an idea of what my Redhat Linux calls are to make this
work.. They are..
ifconfig eth1:0 1.2.3.1 netmask 255.255.255.255
route add -host 1.2.3.4 dev eth1:0
In BSD the closest thing I have tried to this is...
ifconfig en1 1.2.3.1 netmask 255.255.255.255 broadcast 1.255.255.255
alias
route add -host 1.2.3.4 -interface en1
I added the broadcast to the ifconfig line in BSD because I noticed in
linux my broadcast was 1.255.255.255 by default and BSD wasn't doing
this.
I hope this makes a little sense but in summary I wish to just bring 2
IPs into my network and route them so they can talk to each other
without having to bring the entire subnet on to my network.
Thanks for any help.. I've been struggling with this for the past week
without success. Its frustrating that I know how to do it on Linux but
not BSD. :(
Pete
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