Fix: MLPPP complete lost frame.

diff --git a/ppp.c b/ppp.c
index 9661d5c..e805e22 100644 (file)
--- a/ppp.c
+++ b/ppp.c
@@ -1919,18 +1919,22 @@ void processmpin(sessionidt s, tunnelidt t, uint8_t *p, uint16_t l)
                else if (M_offset > 0)
                {
                        uint32_t b_seq = min;
-                       if (min == seq_num)
+                       if ((min == seq_num) && begin_frame)
                        {
-                               if (begin_frame)
-                               {
-                                       // Set new Start sequence
-                                       this_fragmentation->start_index = begin_index;
-                                       this_fragmentation->start_seq = min;
-                                       frag_offset = 0;
-                               }
+                               // Set new Start sequence
+                               this_fragmentation->start_index = begin_index;
+                               this_fragmentation->start_seq = min;
+                               frag_offset = 0;
                        }
                        else
                        {
+                               if (min == seq_num)
+                               {
+                                       M_offset--;
+                                       begin_index = (begin_index ? (begin_index -1) : (MAXFRAGNUM -1));
+                                       b_seq--;
+                               }
+
                                // Find the Begin sequence
                                while (this_fragmentation->fragment[begin_index].length)
                                {