From owner-freebsd-questions  Thu Aug 29 20: 0:32 2002
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Date: Thu, 29 Aug 2002 22:00:24 -0500 (CDT)
From: "=?iso-8859-1?q?Jorge=20Mario=20G.?=" <murcielako@yahoo.com>
Subject: Problems with IP aliasing
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HI
I'm trying to create IP aliases of the ip 192.168.0.2
so i create the alias 192.168.10.1 with no problems
this way:

ifconfig xl0 inet 192.168.10.1 netmask 255.255.255.0
alias
[root@gator:/usr]# ifconfig
xl0:
flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu
1500
        inet 192.168.0.2 netmask 0xffffff00 broadcast
192.168.0.255
        inet 192.168.10.1 netmask 0xffffff00 broadcast
192.168.10.255
        ether 00:10:5a:07:da:30
        media: Ethernet autoselect (100baseTX
<full-duplex>)
        status: active


[root@gator:/usr/ports/mail/squirrelmail]# ping
192.168.10.1
PING 192.168.10.1 (192.168.10.1): 56 data bytes
64 bytes from 192.168.10.1: icmp_seq=0 ttl=64
time=0.080 ms
64 bytes from 192.168.10.1: icmp_seq=1 ttl=64
time=0.044 ms
the alias is there and working

then i tried:
[root@gator:~]# ifconfig xl0 inet 192.168.10.2 netmask
255.255.255.0 alias
ifconfig: ioctl (SIOCAIFADDR): File exists
[root@gator:~]#

any ideas why???
thank 

=====


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