Very Computer

by **Simon Richards** » Fri, 18 Oct 1996 04:00:00

Apologies if this is a commonly asked question.

We would like to have one machine respond to maybe a dozen IP addresses, so
that we can run virtual websites. The machine we would like to do this feat
is running FreeBSD 2.1, and connected via an ethernet card. What we don't
want to do is hang a dozen serial/ethernet cards off it, so what we want is
to allocate a block of addresses to the one card.

I believe we need something called a "virtual interface". Does such a beast
exist for FreeBSD? (And if it doesn't, can anyone offer pointers on writing
one? I know C pretty well, and have written character device drivers for
386BSD and MS-DOG.)

Our newsfeed is really flaky, so please copy to E-mail.

Simon

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Simon Richardson One Chip Solutions
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Englefield Green
EGHAM
Surrey TW20 ODF
ENGLAND

by **Ken Bigelo** » Fri, 18 Oct 1996 04:00:00

> Apologies if this is a commonly asked question.

> We would like to have one machine respond to maybe a dozen IP addresses, so
> that we can run virtual websites. The machine we would like to do this feat
> is running FreeBSD 2.1, and connected via an ethernet card. What we don't
> want to do is hang a dozen serial/ethernet cards off it, so what we want is
> to allocate a block of addresses to the one card.

> I believe we need something called a "virtual interface". Does such a beast
> exist for FreeBSD? (And if it doesn't, can anyone offer pointers on writing
> one? I know C pretty well, and have written character device drivers for
> 386BSD and MS-DOG.)

> Our newsfeed is really flaky, so please copy to E-mail.

> Simon

[CC sent]

You're talking here about aliasing, which FreeBSD does with no problem.
The Apache webserver also runs virtual hosts nicely. Further info on the
Apache end from http://www.apache.org/ .
--
Ken

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by **Nick Say** » Sat, 19 Oct 1996 04:00:00

>Apologies if this is a commonly asked question.
>We would like to have one machine respond to maybe a dozen IP addresses, so
>that we can run virtual websites. The machine we would like to do this feat
>is running FreeBSD 2.1, and connected via an ethernet card. What we don't
>want to do is hang a dozen serial/ethernet cards off it, so what we want is
>to allocate a block of addresses to the one card.

RTFM: ifconfig - the part that talks about 'alias'.

Quote:>I believe we need something called a "virtual interface". Does such a beast
>exist for FreeBSD?

Short answer: yes, it's built in to the OS.

Longer answer: No, FreeBSD doesn't support virtual interfaces because it
doesn't need them. It is able to handle multiple IP addresses per
Ethernet interface without any trouble.

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by **Craig Shrimpt** » Sun, 20 Oct 1996 04:00:00

> Longer answer: No, FreeBSD doesn't support virtual interfaces because it
> doesn't need them. It is able to handle multiple IP addresses per
> Ethernet interface without any trouble.

How do you easily see the aliased interfaces? Ifconfig -a only shows the
"real" one. Linux has a nice feature where ifconfig -a shows them as
eth:0, eth:1, eth:2, ....

Anything like that planned for FBSD?

-Craig

by **Dan Busaro** » Mon, 21 Oct 1996 04:00:00

> How do you easily see the aliased interfaces? Ifconfig -a only shows the
> "real" one. Linux has a nice feature where ifconfig -a shows them as
> eth:0, eth:1, eth:2, ....

netstat -i

by **J Wuns** » Mon, 21 Oct 1996 04:00:00

> How do you easily see the aliased interfaces? Ifconfig -a only shows the
> "real" one.

netstat -i worked all the time. ifconfig -a works now (2.2-current).

--
cheers, J"org

Never trust an operating system you don't have sources for. ;-)

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