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Date:      Sat, 03 Jul 1999 02:44:13 +0200
From:      Roelof Osinga <roelof@eboa.com>
To:        Doug White <dwhite@resnet.uoregon.edu>
Cc:        questions@FreeBSD.ORG
Subject:   Re: IP alias routing problem
Message-ID:  <377D5CDD.CB748DEE@eboa.com>
References:  <Pine.BSF.4.10.9907021302160.98238-100000@resnet.uoregon.edu>

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Doug White wrote:
> 
> > ifconfig_ep1="inet 212.187.0.39 netmask 255.255.248.0"
> > ifconfig_ep1_alias0="inet 194.134.130.170 194.134.128.1 netmask 255.255.252.0"
> 
> ep1 is not a point to point link, so this should fail.  Rewmove the second
> IP address.  (Just what OS is that semantic from?)

That's what I started out with. Didn't work. This does. Got it from
the *FreeBSD* ifconfig man page <g>. Though it doesn't quite work
as expected in that sets the broadcast address to it. Also, the 128.1
is a direct link.

> > route add -net 194.134 194.134.128.1
> 
> This isn't necessary, as the ifconfig command will add it automatically.
> Make the above fix and  you should be happy.

No it doesn't. It adds the 194.134.128/22 route, which unfortunately
routes the reminder of the 194.134/16 net through the default route
thereby preventing me from accessing certain IP restricted services.

I think I need to up the metric on the default route so it'll
prefer the special route given equal opportunities to satisfy.

Roelof

PS in case this'll help:

nl:/stand# ifconfig -a
ep1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
        inet 212.187.0.39 netmask 0xfffff800 broadcast 212.187.7.255
        inet 194.134.130.170 netmask 0xfffffc00 broadcast 194.134.128.1
        ether 00:60:97:e4:98:db

nl:/stand# netstat -rn
Routing tables

Internet:
Destination        Gateway            Flags     Refs     Use     Netif Expire
default            212.187.0.1        UGSc        8   157891      ep1
194.134/16         194.134.128.1      UGSc        4      835      ep1
194.134.128/22     link#2             UC          0        0      ep1
194.134.128.1      0:90:6d:e4:30:0    UHLW        5    14656      ep1   1053
212.187/21         link#2             UC          0        0      ep1

I cleaned it up a little.

-- 
Home is where the (@) http://eboa.com/ is.


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