---
gatchat/gatppp.c | 7 +++++++
1 files changed, 7 insertions(+), 0 deletions(-)
diff --git a/gatchat/gatppp.c b/gatchat/gatppp.c
index fc6769c..1547a75 100644
--- a/gatchat/gatppp.c
+++ b/gatchat/gatppp.c
@@ -169,6 +169,13 @@ static void ppp_recv(GAtPPP *ppp, struct frame_buffer
*frame)
guint16 protocol = ppp_proto(frame->bytes);
guint8 *packet = ppp_info(frame->bytes);
+ /*
+ * Any non-LCP packets received during Link Establishment
+ * phase must be silently discarded.
+ */
+ if (ppp->phase == PPP_PHASE_ESTABLISHMENT && protocol != LCP_PROTOCOL)
+ return;
+
switch (protocol) {
case PPP_IP_PROTO:
/* If network is up & open, process the packet, if not, drop */
--
1.6.6.1
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