lokinet mods that might help fix `hop 0` bug

mods.patch

diff --git a/llarp/iwp/linklayer.cpp b/llarp/iwp/linklayer.cpp
index 30eee514..acb80d56 100644
--- a/llarp/iwp/linklayer.cpp
+++ b/llarp/iwp/linklayer.cpp
@@ -79,6 +79,7 @@ namespace llarp
     {
       std::shared_ptr< ILinkSession > session;
       auto itr = m_AuthedAddrs.find(from);
+      bool isNewSession = false;
       if(itr == m_AuthedAddrs.end())
       {
         ACQUIRE_LOCK(Lock_t lock, m_PendingMutex);
@@ -86,6 +87,7 @@ namespace llarp
         {
           if(not permitInbound)
             return;
+          isNewSession = true;
           m_Pending.insert({from, std::make_shared< Session >(this, from)});
         }
         session = m_Pending.find(from)->second;
@@ -98,7 +100,11 @@ namespace llarp
       }
       if(session)
       {
-        session->Recv_LL(std::move(pkt));
+        bool success = session->Recv_LL(std::move(pkt));
+        if (! success and isNewSession) {
+          LogWarn("Brand new session failed; removing from pending sessions list");
+          m_Pending.erase(m_Pending.find(from));
+        }
       }
     }
 
diff --git a/llarp/iwp/session.cpp b/llarp/iwp/session.cpp
index 84a2ea23..69a2fb56 100644
--- a/llarp/iwp/session.cpp
+++ b/llarp/iwp/session.cpp
@@ -597,7 +597,7 @@ namespace llarp
         }
       }
       SendMACK();
-      Pump();
+      // Pump();
       m_Parent->PumpDone();
     }
 
@@ -807,7 +807,7 @@ namespace llarp
       return m_State == State::Ready;
     }
 
-    void
+    bool
     Session::Recv_LL(ILinkSession::Packet_t data)
     {
       switch(m_State)
@@ -817,10 +817,12 @@ namespace llarp
           {
             // initial data
             // enter introduction phase
-            if(DecryptMessageInPlace(data))
+            if(DecryptMessageInPlace(data)) {
               HandleGotIntro(std::move(data));
-            else
+            } else {
               LogError("bad intro from ", m_RemoteAddr);
+              return false;
+            }
           }
           else
           {
@@ -846,6 +848,7 @@ namespace llarp
           HandleSessionData(std::move(data));
           break;
       }
+      return true;
     }
   }  // namespace iwp
 }  // namespace llarp
diff --git a/llarp/iwp/session.hpp b/llarp/iwp/session.hpp
index 657b153b..083a77b7 100644
--- a/llarp/iwp/session.hpp
+++ b/llarp/iwp/session.hpp
@@ -72,7 +72,7 @@ namespace llarp
       void
       Close() override;
 
-      void Recv_LL(ILinkSession::Packet_t) override;
+      bool Recv_LL(ILinkSession::Packet_t) override;
 
       bool
       SendKeepAlive() override;
@@ -242,4 +242,4 @@ namespace llarp
   }  // namespace iwp
 }  // namespace llarp
 
-#endif
\ No newline at end of file
+#endif
diff --git a/llarp/link/session.hpp b/llarp/link/session.hpp
index 572ac9b0..8c81a5a1 100644
--- a/llarp/link/session.hpp
+++ b/llarp/link/session.hpp
@@ -61,8 +61,9 @@ namespace llarp
 
     /// recv packet on low layer
     /// not used by utp
-    virtual void Recv_LL(Packet_t)
+    virtual bool Recv_LL(Packet_t)
     {
+      return true;
     }
 
     /// send a keepalive to the remote endpoint