diff options
| -rw-r--r-- | gatchat/gatppp.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/gatchat/gatppp.c b/gatchat/gatppp.c index fc6769c3..1547a753 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 */ |