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Date:      Sat, 19 Aug 2000 12:50:18 +0400 (MSD)
From:      "Boris B. Samorodov" <bsam@ipt.ru>
To:        David Schwartz <davids@webmaster.com>
Cc:        freebsd-stable@FreeBSD.ORG
Subject:   RE: ftpd problems...
Message-ID:  <Pine.BSF.4.21.0008191234550.411-100000@mob.kfk.ipt.ru>
In-Reply-To: <NCBBLIEPOCNJOAEKBEAKGELGKEAA.davids@webmaster.com>

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Hi, David Schwartz!

DS> > DS> > RR> Here is my ifconfig:
DS> > DS> > RR> ed0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
DS> > DS> > RR>         inet 216.231.58.3 netmask 0xffffff00 broadcast
DS> > 216.231.58.255
DS> > DS> > RR>         inet 216.231.58.8 netmask 0xffffff00 broadcast
DS> > 216.231.58.255
DS> > DS> >
DS> > DS> > Imho the last line of your ifconfig should be:
DS> > DS> >             inet 216.231.58.8 netmask 0xffffffff broadcast
DS> > 216.231.58.8
DS> > DS> >
DS> > DS> > Am i wrong?
DS> > DS>
DS> > DS> 	Yep, you are wrong. 216.231.58.8 is not a broadcast address.
DS> >
DS> > The main point is netmask 0xffffffff. Broadcast is the result.
DS> 
DS> 	Which is wrong too, since the configuration for 216.231.68.8 shows that
DS> this is an address on a /24. The harm would be done because of the incorrect
DS> broadcast address.

Well, then man ifconfig tells us the next:

--- cut ---
   *alias*   Establish an additional network address for this interface. This
	     is sometimes useful when changing network numbers, and one wishes
	     to accept packets addressed to the old interface.	If the address
	     is on the same subnet as the first network address for this in-
	     terface, a netmask of 0xffffffff has to be specified.
--- cut ---

Main address of ed0 interface is 216.231.58.3. Address we are speaking
of is 216.231.58.8. Thus it _is_ an alias. And it _has_ to be specified
with a netmask of 0xffffffff. And /etc/rc.conf[.local] should have
lines:

--- cut ---
ifconfig_ed0="inet 216.231.58.3 netmask 255.255.255.0"
ifconfig_ed0_alias0="inet 216.231.58.8 netmask 255.255.255.255"
--- cut ---


DS> 	DS

Cheers,
-- 
Boris Samorodov
mailto: <bsam@ipt.ru>



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