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/etc/network/interfaces

My server has five Ethernet ports and one ADSL port. How do I setup IPv4 software bridge using Debian Linux operating systems so that the rest of five ports act as a network switch?
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Ubuntu Linux Add Static Route

I've two network interfaces. One connected to eth0 and another connected to eth1 as follows:


eth0 => private network with private IP in 10.x.x.x/8 range.
eth1 => ISP router with public IP 205.153.203.98 via 205.153.203.97.

How do I setup persistent static route so that 10.0.0.0/255.0.0.0 traffic route via 10.70.201.61 router only?
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I've got a spare USB Wireless Adapters (WIFI adapter/dongle) and my ISP router does not support wireless option. How do I turn my home nas server into a wireless access point (WAP) that allows wireless devices to connect to a wired network using Wi-Fi under a Debian or Ubuntu Linux operating systems without purchasing additional WPA box? How do I setup an Access Point (AP) mode Wi-Fi hotspot on a Debian or Ubuntu Linux operating systems?
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Linux Static IP Address Configuration

How do I configure the Internet Protocol version 4 (IPv4) properties of a network connection with a static IP address for servers running Linux operating systems? How do I configure static IP address under Debian Linux or Redhat / RHEL / Fedora / Redhat Enterprise Linux server?
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How do I display a list of bridges under Linux? How do I show info about the Ethernet bridge configuration in the Linux kernel?
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I've Atheros AR5001 wifi a/b/g card detected and supported natively under Linux. How do I configure my wireless card with WPA2 networking using /etc/network/interfaces file?
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Ubuntu: SIOCADDRT: File exists Error and Solution

I'm typing the following command under Ubuntu Linux:

route add default gw 192.168.3.2 eth0

But it is giving me out the following error:

SIOCADDRT: File exists

How do I fix this problem?
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