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-rw-r--r--pcap_set_timeout.3pcap3
1 files changed, 2 insertions, 1 deletions
diff --git a/pcap_set_timeout.3pcap b/pcap_set_timeout.3pcap
index f8e696f0..8cb8cb64 100644
--- a/pcap_set_timeout.3pcap
+++ b/pcap_set_timeout.3pcap
@@ -39,7 +39,8 @@ which is in units of milliseconds. (See
.BR pcap (3PCAP)
for an explanation of the packet buffer timeout.)
.LP
-The behavior, if the timeout isn't specified, is undefined. We
+The behavior, if the timeout isn't specified, is undefined, as is the
+behavior if the timeout is set to zero or to a negative value. We
recommend always setting the timeout to a non-zero value unless
immediate mode is set, in which case the timeout has no effect.
.SH RETURN VALUE