Date: Wed, 17 Sep 2003 22:24:52 +0200 From: "Simon L. Nielsen" <simon@FreeBSD.org> To: Adam Newhard <atnewhard@microstrain.com> Cc: doc@FreeBSD.org Subject: Re: freebsd documentation Message-ID: <20030917202450.GB394@FreeBSD.org> In-Reply-To: <01c401c37d57$f4e5e640$09a7a8c0@Anewhard> References: <01c401c37d57$f4e5e640$09a7a8c0@Anewhard>
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On 2003.09.17 16:12:01 -0400, Adam Newhard wrote:
> For example, consider the case where the fxp0 interface is connected
> to two networks, the 10.1.1.0 network with a netmask of 255.255.255.0
> and the 202.0.75.16 network with a netmask of 255.255.255.240. We want
> the system to appear at 10.1.1.1 through 10.1.1.5 and at 202.0.75.17
> through 202.0.75.20.
>=20
> The following entries configure the adapter correctly for this arrangemen=
t:
>=20
> ifconfig_fxp0=3D"inet 10.1.1.1 netmask 255.255.255.0"
> ifconfig_fxp0_alias0=3D"inet 10.1.1.2 netmask 255.255.255.255"
> ifconfig_fxp0_alias1=3D"inet 10.1.1.3 netmask 255.255.255.255"
> ifconfig_fxp0_alias2=3D"inet 10.1.1.4 netmask 255.255.255.255"
> ifconfig_fxp0_alias3=3D"inet 10.1.1.5 netmask 255.255.255.255"
> ifconfig_fxp0_alias4=3D"inet 202.0.75.17 netmask 255.255.255.240"
> ifconfig_fxp0_alias5=3D"inet 202.0.75.18 netmask 255.255.255.255"
> ifconfig_fxp0_alias6=3D"inet 202.0.75.19 netmask 255.255.255.255"
> ifconfig_fxp0_alias7=3D"inet 202.0.75.20 netmask 255.255.255.255"*******=
*******************
>
> If you're configuring your system how you said above, those last 3
> lines needs a netmask of 255.255.255.240, not .255
No the current content is correct. From the ifconfig(8) manual page:
alias Establish an additional network address for this interface. T=
his
is sometimes useful when changing network numbers, and one wis=
hes
to accept packets addressed to the old interface. If the addr=
ess
is on the same subnet as the first network address for this
interface, a non-conflicting netmask must be given. Usually
0xffffffff is most appropriate.
0xffffffff is the same as 255.255.255.255.
--=20
Simon L. Nielsen
FreeBSD Documentation Team
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