The attempt to send a ping packet failed, probably due to lack of
encryption keys.
.SP
+.B "provider-failed"
+(For
+.BR SVCSUBMIT .)
+The service provider disconnected without sending back a final reply to
+the job.
+.SP
+.B "provider-overloaded"
+(For
+.BR SVCSUBMIT .)
+The service provider has too many jobs queued up for it already.
+.SP
.BI "resolve-error " hostname
(For
.BR ADD .)
.I tag
is not the tag for any outstanding background job. It may have just
finished.
+.SP
+.BI "unknown-tunnel " tun
+(For
+.BR ADD .)
+The given
+.I tun
+is not the name of any known tunnel driver.
.
.\"--------------------------------------------------------------------------
.SH "NOTIFICATIONS"