Date: Tue, 07 Sep 2004 12:39:18 +0400 From: Vladimir Grebenschikov <vova@fbsd.ru> To: "Dmitriy V. Andrushko" <da@ubtc.kharkov.ua> Cc: freebsd-net@freebsd.org Subject: Re: help:: configuring two network interfaces--message->>ifconfig: ioctl (SIOCAIFADDR): File exists Message-ID: <1094546358.1010.5.camel@localhost> In-Reply-To: <Pine.LNX.4.33.0409071036420.6980-100000@sa.ubtc.kharkov.ua> References: <Pine.LNX.4.33.0409071036420.6980-100000@sa.ubtc.kharkov.ua>
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=F7 =D7=D4, 07/09/2004 =D7 10:38 +0300, Dmitriy V. Andrushko =D0=C9=DB=C5=
=D4:
> > ifconfig_rl1=3D"inet 192.168.10.1 netmask 255.255.255.0"
> > ifconfig_rl0=3D"inet 192.168.10.2 netmask 255.255.255.0"
>=20
> You can't have two network interfaces on the same subnet. You can
> configure your net next way:
> ifconfig_rl1=3D"inet 192.168.10.1 netmask 255.255.255.0"
> ifconfig_rl0=3D"inet 192.168.20.1 netmask 255.255.255.0"
Actually you can
# ifconfig ndis0 10.111.0.1/24
# route delete 10.111.0.0/24
delete net 10.111.0.0
# ifconfig fxp0 10.111.0.2/24
# ifconfig -a
lo0: flags=3D8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
inet 127.0.0.1 netmask 0xff000000=20
fxp0: flags=3D8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu
1500
options=3D8<VLAN_MTU>
inet 10.111.0.2 netmask 0xffffff00 broadcast 10.111.0.255
ether 08:00:46:c8:45:b3
media: Ethernet autoselect (100baseTX)
status: active
ndis0: flags=3D8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
inet 10.111.0.1 netmask 0xffffff00 broadcast 10.111.0.255
ether 00:0e:35:03:82:74
media: IEEE 802.11 Wireless Ethernet autoselect
status: no carrier
ssid ""
channel -1 authmode OPEN powersavemode OFF powersavesleep 100
rtsthreshold 2312 protmode CTS
wepmode OFF weptxkey 1
But you should select what target interface will be for routing to this
subnet, in my example, after configuration of ndis0, I have removed
route of subnet 10.111.0.0/24 to this interface, and then add address
and routing to subnet on fxp0 interface.
now expecting routing table:
# netstat -rn
Routing tables
Internet:
Destination Gateway Flags Refs Use Netif
Expire
10.111/24 link#2 UC 0 0 fxp0
127.0.0.1 127.0.0.1 UH 1 756 lo0
We see, subnet routed to fxp0, but ndis0 still can receive traffic as
configured.
But such configuration is very specific, and you should very understand
what you do.
--=20
Vladimir B. Grebenchikov
vova@fbsd.ru
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