From owner-freebsd-stable  Mon Dec 20 15: 3:44 1999
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Date: Mon, 20 Dec 1999 15:02:14 -0800 (PST)
From: eddy@isi.edu
To: "Chris D. Faulhaber" <jedgar@fxp.org>
Cc: Randy Bush <randy@psg.com>,
	FreeBSD Stable <freebsd-stable@FreeBSD.ORG>
Subject: Re: alias ip addresses not pingable
In-Reply-To: <Pine.BSF.4.10.9912201750320.78241-100000@pawn.primelocation.net>
References: <E120BZ8-0000Yi-00@rip.psg.com>
	<Pine.BSF.4.10.9912201750320.78241-100000@pawn.primelocation.net>
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Chris D. Faulhaber states:
> On Mon, 20 Dec 1999, Randy Bush wrote:
> 
> > 3.4.-stable-9912201156
> > 
> > this is new and exciting.  it used to work, and still does over on a 3.3-RC
> > system.  i imagine i have fumbled something, but don't know what.
> > 
> > in /etc/rc.conf
> > network_interfaces="fxp0 lo0" # List of network interfaces (lo0 is loopback).
> > ifconfig_fxp0="inet 147.28.0.39 netmask 255.255.255.0"
> > ifconfig_fxp0_alias0="inet 147.28.0.3 netmask 255.255.255.0"
> > ifconfig_fxp0_alias1="inet 147.28.0.4 netmask 255.255.255.0"
> > 
> 
> aliases should have a netmask of 255.255.255.255, as seen in ifconfig(8)
> 

why?  i regularly use aliases with masks smaller than /32, on a 3.1
system e.g:

[183] FreeBSD tik:eddy > ifconfig -a
xl0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
        inet 128.9.160.70 netmask 0xfffff000 broadcast 128.9.175.255
        inet 10.3.2.1 netmask 0xffffff00 broadcast 10.3.2.255
        ether 00:c0:4f:68:43:c1 
        media: 10baseT/UTP <half-duplex>
        supported media: autoselect 100baseTX <full-duplex> 100baseTX <half-duplex> 100baseTX 10baseT/UTP <full-duplex> 10baseT/UTP <half-duplex> 10baseT/UTP

[184] FreeBSD tik:eddy > ping 10.3.2.1
PING 10.3.2.1 (10.3.2.1): 56 data bytes
64 bytes from 10.3.2.1: icmp_seq=0 ttl=255 time=0.066 ms
^C

- rusty


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