Date: Thu, 8 Aug 2013 16:46:52 -0500 From: "Matthew D. Fuller" <fullermd@over-yonder.net> To: Michael Sierchio <kudzu@tenebras.com> Cc: "freebsd-net@freebsd.org" <freebsd-net@freebsd.org>, Mark Felder <feld@freebsd.org> Subject: Re: how calculate the number of ip addresses in a range? Message-ID: <20130808214652.GZ34979@over-yonder.net> In-Reply-To: <CAHu1Y715hvbFC=pTm-DGQrvzUohxoGEhCia8-e9WGVKFm=i%2B6w@mail.gmail.com> References: <CAA_1SgEEeyCOk%2Bi9Zp725RfQ9s0tpELXL0SSBeiN%2B60z%2BxqYUg@mail.gmail.com> <20130808133055.15e53b94@davenulle.org> <1F113410-18DE-47CF-96C1-5EE4E8BC4980@dataix.net> <1375977240.3930.7571559.74F89736@webmail.messagingengine.com> <CAHu1Y715hvbFC=pTm-DGQrvzUohxoGEhCia8-e9WGVKFm=i%2B6w@mail.gmail.com>
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On Thu, Aug 08, 2013 at 08:55:38AM -0700 I heard the voice of
Michael Sierchio, and lo! it spake thus:
>
> pkg_add -r ipsc
For another, there's a "cidrcalc" program installed by devel/libcidr
(full disclosure: of which I'm the author) that does similar things:
% cidrcalc -bs 10.80.128.35/27
Address: 10.80.128.35
Netmask: 255.255.255.224 (/27)
BinAddr: 00001010 01010000 10000000 00100011
10 80 128 35
BinMask: 11111111 11111111 11111111 11100000
255 255 255 224
Wildcard: 0.0.0.31
Network: 10.80.128.32/27
Broadcast: 10.80.128.63
Hosts: 10.80.128.33 - 10.80.128.62
NumHosts: 30
Supernet: 10.80.128.0/26
Subnets: 10.80.128.32/28
10.80.128.48/28
--
Matthew Fuller (MF4839) | fullermd@over-yonder.net
Systems/Network Administrator | http://www.over-yonder.net/~fullermd/
On the Internet, nobody can hear you scream.
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