Fix PMTU discovery via datagram SPTPS.

[tinc] / src / sptps.h

diff --git a/src/sptps.h b/src/sptps.h
index 3f8d29c..efca2b3 100644 (file)
--- a/src/sptps.h
+++ b/src/sptps.h
@@ -39,6 +39,9 @@
 #define SPTPS_SIG 3           // Waiting for a SIGnature record
 #define SPTPS_ACK 4           // Waiting for an ACKnowledgement record
 
+// Overhead for datagrams
+#define SPTPS_DATAGRAM_OVERHEAD 21
+
 typedef bool (*send_data_t)(void *handle, uint8_t type, const char *data, size_t len);
 typedef bool (*receive_record_t)(void *handle, uint8_t type, const char *data, uint16_t len);