[Simh] Basic questions

[Sergey Oboguev]

> In particular I get the following error:
> david at Thinkpad:~$ sudo brctl addbr br0
> david at Thinkpad:~$ sudo ifconfig tap0 up
> tap0: ERROR while getting interface flags: No such device

Perhaps because 

    /usr/sbin/tunctl -t $TAPDEV -u $USERID

is missing.

You may find the following script helpful:  
http://oboguev.net/misc/linux-tap.sh.txt

Usage is at the bottom or invokable as

    ./linux-tap.sh help