What does HDB "lost line errno - 0" mean?

[Larry Campbell]

Often (maybe 50% of the time), when uucico attempts to dial out,
it successfully opens the tty line (the DTR light on the modem comes
on) and then gives up, closes the tty line, and retries, giving the
debug message "lost line errno - 0".  If there's only one eligible
tty line, this isn't a problem, since it retries and ALWAYS works
the second time.  But if there are two (or more) eligible lines, it
will give up on the first one and use the second one instead.

This is in the HDB uucp (BNU) included with S5R3.0 (Interactive 386/ix
1.0.6).

Any ideas?  Is this just a bug I have to put up with?
-- 
Larry Campbell                          The Boston Software Works, Inc.
campbell at bsw.com                        120 Fulton Street
wjh12!redsox!campbell                   Boston, MA 02146