docs/112481: bug in ppp.linkup example

[trhodes at FreeBSD.org]

Synopsis: bug in ppp.linkup example

Responsible-Changed-From-To: freebsd-doc->brian
Responsible-Changed-By: trhodes
Responsible-Changed-When: Mon Jan 12 22:44:07 UTC 2009
Responsible-Changed-Why: 
Brian Somers is the PPP guy IIRC, and hanging forever seems more
like a possible software bug than a doc bug.  Brian, could you
look at this please?

http://www.freebsd.org/cgi/query-pr.cgi?pr=112481