Date: Wed, 09 Apr 2003 11:35:08 -0300 From: "Daniel C. Sobral" <dcs@tcoip.com.br> To: Jacques Beigbeder <Jacques.Beigbeder@ens.fr> Cc: freebsd-current@freebsd.org Subject: Re: 4.7 IP alias ? Message-ID: <3E942F9C.9060302@tcoip.com.br> In-Reply-To: <20030409141422.GA20752@trefle.ens.fr> References: <20030409141422.GA20752@trefle.ens.fr>
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Jacques Beigbeder wrote:
> I have a host with GENERIC 4.7 kernel:
>
> # uname -a
> FreeBSD federation 4.7-RELEASE FreeBSD 4.7-RELEASE #0: Wed Oct 9 15:08:34 GMT ...
>
> I have an interface like:
>
> # ifconfig fxp0
> fxp0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
> inet x.y.z.16 netmask 0xffffff00 broadcast x.y.z.255
> inet6 fe80::2b0:d0ff:feea:7442%fxp0 prefixlen 64 scopeid 0x1
> ether 00:b0:d0:ea:74:42
> media: Ethernet autoselect (10baseT/UTP)
> status: active
>
> The other interface (fxp1) is unused.
>
> Then I try to set an IP alias, same interface, same network, another
> IP address, the end is .250 instead of .16.
>
> # ifconfig fxp0 x.y.z.250 netmask 255.255.255.0 broadcast x.y.z.255 alias
> ifconfig: ioctl (SIOCAIFADDR): File exists
>
> Why does this command fails?
> I'm used to use this on 3.4, 4.5...
Frankly, I doubt you used to do this before. Anyway, what you need to do
is use /32 netmask (255.255.255.255) for an alias in the same network of
a previous configured network address.
--
Daniel C. Sobral (8-DCS)
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