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-rw-r--r--package/ppp/patches/206-compensate_time_change.patch13
1 files changed, 13 insertions, 0 deletions
diff --git a/package/ppp/patches/206-compensate_time_change.patch b/package/ppp/patches/206-compensate_time_change.patch
index 041ae1f86f..fb6c65679e 100644
--- a/package/ppp/patches/206-compensate_time_change.patch
+++ b/package/ppp/patches/206-compensate_time_change.patch
@@ -1,3 +1,16 @@
+pppd: Watch out for time warps
+
+On many embedded systems there is no battery backed RTC and a proper system
+time only becomes available through NTP after establishing a connection.
+
+When the clock suddenly jumps forward, the internal accounting (connect time)
+is confused resulting in unreliable data.
+
+This patch implements periodic clock checking to look for time warps, if one
+is detected, the internal counters are adjusted accordingly.
+
+Signed-off-by: Jo-Philipp Wich <jow@openwrt.org>
+
--- a/pppd/main.c
+++ b/pppd/main.c
@@ -90,6 +90,7 @@