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Date:      Thu, 30 May 2013 00:33:02 +1000 (EST)
From:      Ian Smith <smithi@nimnet.asn.au>
To:        =?utf-8?B?SsOBS8OTIEFuZHLDoXM=?= <jako.andras@eik.bme.hu>
Cc:        freebsd-jail@freebsd.org, Mogamat Abrahams <lists@tabits.co.za>
Subject:   Re: Cant reach Jailed services from internet.
Message-ID:  <20130530002458.R55451@sola.nimnet.asn.au>
In-Reply-To: <20130528080719.GA11195@eik.bme.hu>
References:  <loom.20130527T091739-282@post.gmane.org> <cc5f425486d0fc06e1ddc0a8cbe300ad@nanogene.org> <loom.20130527T215634-190@post.gmane.org> <20130528145629.X55451@sola.nimnet.asn.au> <20130528080719.GA11195@eik.bme.hu>

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On Tue, 28 May 2013, JÁKÓ András wrote:

 >> That's a worry .. you won't do any good trying to use the broadcast 
 >> address.  Mats is right, you only get 2 usable addresses with a /30.

 > Assigning a /30 for four jails is perfectly valid, if it's an 
 > aggregate of four /32s. I would configure a static route on the 
 > default gateway for 174.x.x.76/30 -> 67.x.x.x, then on the host I'd 
 > assign the four /32s to lo1..lo4. Packets arrive to the jails because 
 > of the /30 static route in the neighbouring router, packets leave the 
 > jail because of the host's already existing default route, and of 
 > course traffic between the jails and the host are OK because the 
 > kernel knows its own interfaces. (Actually that's how I run my 
 > FreeBSD jails.)

 > Regards,
 > András

Ok, thanks, that's interesting.  Maybe I can squeeze more from my /29 ..

cheers, Ian
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