STREAMS/UX for the HP 9000 Reference Manual

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STREAMS/UX-NetTL Link
NetTL (Network Tracing and Logging facility) is the facility used by
network drivers and modules to capture network error events or trace data.
In HP-UX 10.0, a mechanism will enable STREAMS/UX to deliver
log/trace messages to NetTL. Previously, STREAMS/UX had its own error
logging and tracing facility.
This chapter describes the STREAMS/UX-NetTL link, which integrates the
STREAMS/UX logging and tracing facility with NetTL. STREAMS/UX
error and trace messages generated by strlog() or by putmsg() to a
STREAMS/UX log driver can also be delivered to NetTL with the
STREAMS/UX-NetTL link.
With the STREAMS/UX-NetTL link, a single common interface for
network tracing and logging will exist. Also, STREAMS/UX logging can
benefit from NetTL's powerful features like message filtering.
Implementation of the STREAMS/UX-NetTL link is transparent to strerr
and strace users. These commands work just as before even when NetTL is
running.