User manual

Linux

If you intend to use multiple Linux accounts to run VAX MP, you will need multiple tap interfaces with

different security settings. If you intend to run multiple instances of VAX MP and/or other SIMH

simulators within the same account, you will also need to create multiple tap interfaces owned by that

account.

Note that

linux-tap.sh create command assumes the bridge does not exist yet. If the bridge

already exists, it is possible to create additional tapX devices (such as perhaps to run multiple instances

of VAX MP and/or other SIMH simulators concurrently, or by different users) and link them into the

existing bridge with command:

sudo ./linux-tap.sh addtap br0 tapX vaxuser

For instance:

sudo ./linux-tap.sh addtap br0 tap2 vaxuser2

sudo ./linux-tap.sh addtap br0 tap9 vaxuser9

Note that interfaces and bridging created by script linux-tap.sh are not persistent and need to be re-

created each time host system restarts, i.e.

linux-tap.sh create and addtap commands should be

added to Linux system startup script or other procedure executed each time at Linux restart or

otherwise executed after Linux startup and before VAX MP use.

Created additional tap interfaces (beyond the last remaining one) can be destroyed with command

sudo ./linux-tap.sh deltap br0 tapX

The final (or the only) interface and the bridge itself can be destroyed with command

sudo ./linux-tap.sh destroy br0 eth0 tapX

or by rebooting Linux. You can invoke help on available linux-tap.sh options with

./linux-tap.sh help