SheepShaver V2.2 Installation and User's Guide (Linux)

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Using SheepShaver

Changing the display mode

Networking

There are three approaches to networking with SheepShaver:

1. For 2.4 kernels: Direct access to an Ethernet card via the "sheep_net" driver.
   
   In this case, the "ethernet card description" must be the name of a real Ethernet card, e.g. "eth0". It also requires the "sheep_net" driver to be installed and accessible. This approach will allow you to run all networking protocols under MacOS (TCP/IP, AppleTalk, IPX etc.) but there is no connection between Linux networking and MacOS networking. MacOS will only be able to talk to other machines on the Ethernet, but not to other networks that your Linux box routes (e.g. a second Ethernet or a PPP connection to the Internet).
    
2. For 2.6 kernels (also see here): Putting SheepShaver on a virtual Ethernet via the "ethertap" device.

   In this case, the "ethernet card description" must be the name of an ethertap interface, e.g. "tap0".
   It also requires that your kernel is configured to enable routing and the ethertap device. Many linux distributions are already configured this way, so try before starting on building a new kernel.
   When rebuilding a kernel, under "Networking options", enable "Kernel/User netlink socket" and "Netlink device emulation", under "Network device support", activate "Ethertap network tap". You also have to modify devices/net/ethertap.c a bit before compiling the new kernel:

   • insert #define CONFIG_ETHERTAP_MC 1 near the top (after the #include lines)
   • comment out the line dev->flags|=IFF_NOARP; in ethertap_probe()

   Next, see /usr/src/linux/Documentation/networking/ethertap.txt for information on how to set up /dev/tap* device nodes and activate the ethertap interface. Under MacOS, select an IP address that is on the virtual network and set the default gateway to the IP address of the ethertap interface. This approach will let you access all networks that your Linux box has access to (especially, if your Linux box has a dial-up Internet connection and is configured for IP masquerading, you can access the Internet from MacOS). The drawback is that you can only use network protocols that Linux can route, so you have to install and configure netatalk if you want to use AppleTalk. Here is an example /etc/atalk/atalkd.conf for a LAN:

   eth0 -seed -phase 2 -net 1 -addr 1.47 -zone "Ethernet"
   tap0 -seed -phase 2 -net 2 -addr 2.47 -zone "Sheepnet"
   

   (the "47" is an arbitrary node number). This will set up a zone "Ethernet" (net 1) for the Ethernet and a zone "Sheepnet" (net 2) for the internal network connection of the ethertap interface. MacOS should automatically recognize the nets and zones upon startup. If you are in an existing AppleTalk network, you should contact your network administrator about the nets and zones you can use (instead of the ones given in the example above).
3. Networking protocols for serial connections (PPP and SLIP, for example) can be used provided you have the appropriate MacOS system components installed (e.g. Open Transport/PPP).

Using floppy disks

Accessing Linux files

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