Bring the link down with
ifconfig(ADMN).
For example, if the link you are reconfiguring is the
first SLIP link on your system
(sl0), enter ifconfig sl0 down
at the command line.
Enter /usr/bin/slconf.
Highlight the link to delete.
Select Remove, then click on OK.
Click on OK to exit slconf.
NOTE:
You can also use the Network Configuration Manager to
modify a link. To do so, highlight the SCO TCP/IP for UNIX entry
directly beneath the SCO TCP/IP SLIP driver,
then select Modify protocol from the Protocol
menu and join the previous procedure at step 3.