Date: Thu, 21 Feb 2008 13:33:35 +0100 From: Mel <fbsd.questions@rachie.is-a-geek.net> To: freebsd-questions@freebsd.org Cc: Olivier Nicole <on@cs.ait.ac.th>, Siraj Shaikh <siraj.shaikh@gmail.com> Subject: Re: IP Aliasing Message-ID: <200802211333.36144.fbsd.questions@rachie.is-a-geek.net> In-Reply-To: <3b2ddd940802210407j7b83059duabadeccaec53a26c@mail.gmail.com> References: <3b2ddd940801280627m6d747cd1g27682bcd9e50ceb7@mail.gmail.com> <200801290234.m0T2YtLn074403@banyan.cs.ait.ac.th> <3b2ddd940802210407j7b83059duabadeccaec53a26c@mail.gmail.com>
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On Thursday 21 February 2008 13:07:08 Siraj Shaikh wrote:
> ifconfig_ed0_alias0="inet 127.0.0.251 netmask 0xffffffff"
> ifconfig_ed0_alias1="inet 127.0.0.252 netmask 0xffffffff"
> ifconfig_ed0_alias2="inet 127.0.0.253 netmask 0xffffffff"
>
> Just want to know, as I want to configure about 253 addresses as an
> alias on a single machine (along with the primary address, this will
> be 254 address, a whole C-class subnet) - and would like these entries
> to hold when I boot. Also, is there any shortcut to adding a range of
> net/host address or would I have to add a line for each address?
Yes and yes. Yes it needs one line per alias and yes, there's a shortcut:
for i in $(jot - 0 254); do
echo ifconfig_ed0_alias${i}="\"inet 127.0.0.$((i+1)) netmask 0xffffffff\""
done >>/etc/rc.conf
Wouldn't do this with 127.0.0 btw, but I figured you wouldn't. You'd also have
to make a provision for the main IP, but then again, it's easier to remove
the specific line by hand.
--
Mel
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