fix

llarp/service/endpoint.cpp

@@ -1119,6 +1119,7 @@ namespace llarp
               PutReplyIntroFor(f.T, m.introReply);
               m.sender    = m_Identity.pub;
               m.seqno     = GetSeqNoForConvo(f.T);
+              f.S         = 0;
               f.F         = m.introReply.pathID;
               transfer->P = remoteIntro.pathID;
               if(!f.EncryptAndSign(m, K, m_Identity))

llarp/service/sendcontext.cpp

@@ -90,6 +90,7 @@ namespace llarp
       m.seqno      = m_Endpoint->GetSeqNoForConvo(f.T);
       m.introReply = path->intro;
       f.F          = m.introReply.pathID;
+      f.S          = 0;
       m.sender     = m_Endpoint->GetIdentity().pub;
       m.tag        = f.T;
       m.PutBuffer(payload);