Date: Sun, 30 Jun 2002 10:33:17 +0100 From: Matthew Seaman <m.seaman@infracaninophile.co.uk> To: Andrew <perl@ukrpost.net> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: /etc/neworks Message-ID: <20020630093317.GB39130@happy-idiot-talk.infracaninophi> In-Reply-To: <2555951313.20020630072855@ukrpost.net> References: <2555951313.20020630072855@ukrpost.net>
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On Sun, Jun 30, 2002 at 07:28:55AM +0300, Andrew wrote:
> What is the use of /etc/networks file? When should I change defaults?
/etc/networks does for network names and addresses what /etc/hosts
does for hostnames. /etc/networks is pretty much ignored nowadays -- I
can't recall having used a machine where it was modified from what the
original manufacturer supplied.
As far as I can tell, /etc/networks only works for the old A,B,C
network classifications --- what nowadays are called /8, /16 or /24
netblocks. Modern usage with CIDR blocks that aren't byte aligned, or
anything to do with IPv6 isn't covered.
You can enter your own network data into the file if you wish --- the
only effect will be cosmetic on the output of commands like
`netstat -r'. See the getnetent(3) man page for the programmatic
interface.
Matthew
--
Dr Matthew J Seaman MA, D.Phil. 26 The Paddocks
Savill Way
Tel: +44 1628 476614 Marlow
Fax: +44 0870 0522645 Bucks., SL7 1TH UK
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