When \fBsecchan\fR performs controller discovery (see \fBCONTACTING
THE CONTROLLER\fR, above, for more information about controller
discovery), it validates the controller location obtained via DHCP
-with a regular expression. Only controllers whose names match the
-regular expression will be accepted.
+with a POSIX extended regular expression. Only controllers whose
+names match the regular expression will be accepted.
The default regular expression is \fBssl:.*\fR (meaning that only SSL
controller connections will be accepted) when any of the SSL
.SH "SEE ALSO"
.BR dpctl (8),
+.BR ofp-discover (8),
.BR controller (8),
.BR ofp-pki (8),
.BR vlogconf (8),