networkingconfiguration [Wiki]

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====== Networking Configuration ======

===== Note about debugging your network configuration under virtualization =====

Most virtualization software offer many types of network virtualization.
For example, the QEMU default network configuration supports for example
http but not ICMP. Therefore testing your network connection with ping doesn't
work. 

The a good way to determine if your network connection is working or not
is invoking "pkgin up". If you get no errors, your connection works AND
you have updated the pkgin repo.


===== Changing selected network card =====

The //netconf// utility allows one to change the networking configuration
from the options you selected when installing. It allows disable networking,
select a different network card (PCI cards are detected, if you have a 
non-PCI card you should find out what type of card you have first) and allows
one to enable or disable DHCP.

===== Using a Static IP =====

Add the following lines to /etc/rc.net:

<code>
ifconfig -I /dev/ip0 -n <netmask> -h <ip_address>
add_route -g <gateway>
</code>

Then add the following lines to ///etc/hosts//:

<code>
your.name.server <name_server>
</code>

===== Supported Network Cards =====

The follow list is displayed by //netconf// of version Minix 3.1.7 (2010-07)

The drivers name is found after configuration in file /etc/inet.conf
|**NIC Selection** |**Corresponding Driver Name**|
| 0. No Ethernet card (no networking) |(n/a)|
| 1. Intel Pro/100 |fxp|
| 2. 3Com 501 or 3Com 509 based card |dpeth|
| 3. Realtek 8139 based card (also emulated by KVM) |rtl8139|
| 4. Realtek 8169 based card |rtl8169|
| 5. Realtek 8029 based card (also emulated by Qemu) |dp8390|
| 6. NE2000, 3com 503 or WD based card (also emulated by Bochs) |dp8390|
| 7. AMD LANCE (also emulated by VMWare and VirtualBox) |lance|
| 8. Intel PRO/1000 Gigabit |e1000 |
| 9. Attansic/Atheros L2 FastEthernet|atl2 |
|10. DEC Tulip 21140A in VirtualPC |dec21140A |
|11. Different Ethernet card (no networking) |(n/a) |

====== LwIP ======

An alternative to the //inet// server is represented by the //lwip// server. This server is based on the [[http://savannah.nongnu.org/projects/lwip/|lwip]] stack. The stack is separated in the liblwip. The server itself is an implementation of the VFS-INET protocol, the sockets.

To use the lwip instead of inet, **lwip=yes** must be set in the boot monitor. You can edit the boot parameters by creating a local boot.cfg file and adding **lwip=yes** to the end of the **menu=** lines in that file. The update_bootcfg tool will apply your changes. Then, simply reboot to start using lwip.
<code>
cp /etc/boot.cfg.default /etc/boot.cfg.local
vi /etc/boot.cfg.local
/bin/update_bootcfg
reboot
</code>

It is preferable to use //lwip// with static network configuration only as there are some problems with the current dhcp client as it uses some very inet-specific non-standard features. DHCP is likely to get the configuration, sometimes the local name server does not get the DNS configuration though. A good configuration for KVM is :

<code>
ip      : 10.0.2.15
mask    : 255.255.255.0
gateway : 10.0.2.2
DNS     : 10.0.2.3
</code>

Be aware that it is **necessary** to use **-I** option with add_route if you are using lwip.
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