Commit 3610bb68 authored by Dan Williams's avatar Dan Williams

man: describe debugging environment variables

parent d034b863
......@@ -58,5 +58,18 @@ The following options are supported:
.I "--no-daemon"
Do not daemonize. This is useful for debugging, and directs log output to the
controlling terminal in addition to syslog.
.SH DEBUGGING
The following environment variables are supported to help debugging. When used
in conjunction with the "--no-daemon" option (thus echoing PPP and DHCP helper
output to stdout) these can quickly help pinpoint the source of connection
issues.
.TP
.I "NM_SERIAL_DEBUG"
When set to anything, causes NetworkManager to log all serial communication to
and from serial devices like mobile broadband 3G modems.
.TP
.I "NM_PPP_DEBUG"
When set to anything, causes NetworkManager to turn on PPP debugging in pppd,
which logs all PPP and PPTP frames and client/server exchanges.
.SH SEE ALSO
.BR nm-tool (1)
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