G'day folks,
I used to do this on my permanent link at home a while ago -- my ISP
provided me with a /30 network address with which to run the point-
to-point link, and then they routed my class C via my end of the /30,
and I was told to default via their end of the /30.
This meant that when originating connections from my FreeBSD system, it
would be sourced on the /30 address at my end - and therefore subject to
my ISPs reverse mappings, not my own class C's.
So to force my connections to originate from one of my IPs, I would
delete the PPP address that was negotiated with PPP (after pppd was
completely connected), and added one of my own with ifconfig, ala:
ifconfig ppp0 delete
ifconfig ppp0 10.1.1.1 netmask 255.255.255.255 192.168.1.1 alias
route delete default
route add default 192.168.1.1
now while 192.168.1.1 doesn't exist, and I can't ping it, sending
my default traffic via that address forces it to be sent out via
the ppp link, and the router at the other end doesn't give a hoot
about the fact that I sent the packet to the wrong address, all it
cares about is where to send the packet next :)
And yes, I can ping 10.1.1.1 from outside my network, so all works
as expected.
Cheers
Leigh
--
| "By the time they had diminished | Leigh Hart, [EMAIL PROTECTED] |
| from 50 to 8, the other dwarves | CCNA: http://www.cisco.com |
| began to suspect 'Hungry' ..." | PO Box 3057 Newton SA 5074 |
| -- Gary Larson, "The Far Side" | http://www.dotat.com/hart/ |
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