Re: Multiple IP numbers, one for each Subnet
On Tue, 9 Jun 1998, Ian Stuart wrote:
> I'm using a i386 portable with 2.0.34 installed. I have a requirement to
> plug this machine into various subnets, depending on where I'm working
> within my organisation.
>
> Is there a way to configure the system so that I can use
> (a) 4 or 5 different gateways (only one of which will be reachable at one
> time) and
> (b) 4 or 5 IP numbers, only one of which will be valid at any one time?
There are very few files that actually contain IP numbers, viz.
/etc/resolv.conf, /etc/hosts, /etc/networks and /etc/init.d/network and
the first of these would probably stay the same as we're talking subnets.
So all you need is a few scripts hacked from the last, that delete the two
(network and gateway) routes, ifconfig the new number, and add the two new
routes. They could meanwhile overwrite the middle two files as well.
ifconfig and route commands are totally dynamic; I don't think daemons
etc. should hold onto any of this information. (I don't have a clue what
reads /etc/networks though I suppose you could use it yourself to delete
the appropriate -net route.)
Cheers,
--
Email: d.wright@open.ac.uk Tel: +44 1908 653 739 Fax: +44 1908 655 151
Snail: David Wright, Earth Science Dept., Milton Keynes, England, MK7 6AA
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official stationery. Views expressed here are either my own or plagiarised.
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