Document new dialup mode

diff --git a/config/bpdyndnsd.conf b/config/bpdyndnsd.conf
index cc9fa3e..acd969a 100644 (file)
--- a/config/bpdyndnsd.conf
+++ b/config/bpdyndnsd.conf
@@ -4,3 +4,18 @@ syslog=1
 # Uncomment following two lines if located behind a NAT router.
 #webcheck_enabled=1
 #webcheck_url=http://checkip.dyndns.com
+
+# Dialup mode
+#
+# Dialup connections which get billed by online time
+# usually have an inactivity timeout to disconnect the line.
+# As bpdyndnsd emits a DNS query every half minute or so,
+# we would end up triggering the timeout counter.
+#
+# In dialup mode, we keep quiet for atleast the specified
+# number of seconds. To make sure every host gets updated correctly,
+# we have a "burst" period (dialup_burst_seconds)
+# in which we act normally and then keep quiet.
+dialup_mode=0
+dialup_burst_period_seconds=120
+dialup_sleep_seconds=