diff --git a/Makefile b/Makefile
index 4bcbe56bd..9a1df703a 100644
--- a/Makefile
+++ b/Makefile
@@ -9,13 +9,12 @@ STATIC_OBJ = $(STATIC_SRC:.cpp=.cpp.o)
 DAEMON_SRC = $(wildcard $(REPO)/daemon/*.c)
 DAEMON_OBJ = $(DAEMON_SRC:.c=.o)
 
-PKG = pkg-config
+SODIUM_FLAGS = $(shell pkg-config --cflags libsodium)
+SODIUM_LIBS = $(shell pkg-config --libs libsodium)
 
-PKGS = libsodium
-
-REQUIRED_CFLAGS = $(shell $(PKG) --cflags $(PKGS)) -I$(REPO)/include -std=c99
-REQUIRED_CXXFLAGS = $(shell $(PKG) --cflags $(PKGS)) -I$(REPO)/include -std=c++17
-REQUIRED_LDFLAGS = $(LDFLAGS) $(shell $(PKG) --libs $(PKGS)) -ljemalloc
+REQUIRED_CFLAGS = $(SODIUM_FLAGS) -I$(REPO)/include -std=c99
+REQUIRED_CXXFLAGS = $(SODIUM_FLAGS) -I$(REPO)/include -std=c++17
+REQUIRED_LDFLAGS = $(LDFLAGS) -ljemalloc $(SODIUM_LIBS) 
 CXXFLAGS := $(REQUIRED_CXXFLAGS)
 CFLAGS := $(REQUIRED_CFLAGS)
 
diff --git a/include/sarp/config.h b/include/sarp/config.h
index a79f73519..4262b1aef 100644
--- a/include/sarp/config.h
+++ b/include/sarp/config.h
@@ -12,7 +12,7 @@ void sarp_new_config(struct sarp_config ** conf, struct sarp_alloc * mem);
 void sarp_free_config(struct sarp_config **  conf);
 
 int sarp_load_config(struct sarp_config * conf, const char * fname);
-
+  
 #ifdef __cplusplus
 }
 #endif
diff --git a/include/sarp/ev.h b/include/sarp/ev.h
new file mode 100644
index 000000000..eebac7658
--- /dev/null
+++ b/include/sarp/ev.h
@@ -0,0 +1,19 @@
+#ifndef SARP_EV_H
+#define SARP_EV_H
+#include <sarp/mem.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+  struct sarp_ev_loop;
+
+  void sarp_ev_loop_alloc(struct sarp_ev_loop ** ev, struct sarp_alloc * mem);
+  void sarp_ev_loop_free(struct sarp_ev_loop ** ev);
+
+  int sarp_ev_loop_run(struct sarp_ev_loop * ev);
+  
+#ifdef __cplusplus
+}
+#endif
+#endif
diff --git a/include/sarp/link.h b/include/sarp/link.h
new file mode 100644
index 000000000..9f6965cb8
--- /dev/null
+++ b/include/sarp/link.h
@@ -0,0 +1,27 @@
+#ifndef SARP_LINK_H_
+#define SARP_LINK_H_
+#include <sarp/config.h>
+#include <sarp/mem.h>
+#include <sarp/router.h>
+#include <sarp/ev.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+  struct sarp_inet_link;
+
+  void sarp_inet_link_alloc(struct sarp_inet_link ** link, struct sarp_alloc * mem);
+  void sarp_inet_link_free(struct sarp_inet_link ** link);
+
+  void sarp_inet_link_configure(struct sarp_inet_link * link, struct sarp_config * conf);
+
+  void sarp_inet_link_start(struct sarp_inet_link * link, struct sarp_router * router);
+
+  void sarp_inet_link_stop(struct sarp_inet_link * link);
+  
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/libsarp/config.cpp b/libsarp/config.cpp
index 4c407105f..d26e4e5d4 100644
--- a/libsarp/config.cpp
+++ b/libsarp/config.cpp
@@ -1,39 +1,38 @@
 #include <sarp/config.h>
+#include "config.hpp"
 #include "ini.hpp"
 
 namespace sarp
 {
-  struct config
-  {
-    typedef std::map<std::string, std::string> section_t;
-    section_t router;
-    section_t network;
-    section_t netdb;
 
-    bool Load(const char * fname)
+  template<typename Config, typename Section>
+  static Section find_section(Config & c, const std::string & name, const Section & sect)
+  {
+    if(c.sections.find(name) == c.sections.end())
+      return sect;
+    return c.sections[name].values;
+  }
+   
+  
+  bool Config::Load(const char * fname)  
+  {
+    std::ifstream f;
+    f.open(fname);
+    if(f.is_open())
     {
-      std::ifstream f;
-      f.open(fname);
-      if(f.is_open())
-      {
-        ini::Parser parser(f);
-        auto & top = parser.top();
-        
-        return true;
-      }
-      return false;
-    };
-    
+      ini::Parser parser(f);
+      auto & top = parser.top();
+      router = find_section(top, "router", section_t{});
+      network = find_section(top, "network", section_t{});
+      netdb = find_section(top, "netdb", section_t{});
+      return true;
+    }
+    return false;
   };
 }
 
 
 extern "C" {
-  struct sarp_config
-  {
-    sarp::config impl;
-    sarp_alloc * mem;
-  };
 
   void sarp_new_config(struct sarp_config ** conf, struct sarp_alloc * mem)
   {
diff --git a/libsarp/config.hpp b/libsarp/config.hpp
new file mode 100644
index 000000000..5cf9941c2
--- /dev/null
+++ b/libsarp/config.hpp
@@ -0,0 +1,32 @@
+#ifndef LIBSARP_CONFIG_HPP
+#define LIBSARP_CONFIG_HPP
+#include <map>
+#include <string>
+
+#include <sarp/config.h>
+
+namespace sarp
+{
+  struct Config
+  {
+    typedef std::map<std::string, std::string> section_t;
+ 
+    section_t router;
+    section_t network;
+    section_t netdb;
+
+    bool Load(const char * fname);
+    
+  };
+}
+
+
+extern "C" {
+  struct sarp_config
+  {
+    sarp::Config impl;
+    sarp_alloc * mem;
+  };
+}
+
+#endif
diff --git a/libsarp/link.cpp b/libsarp/link.cpp
new file mode 100644
index 000000000..cc6497480
--- /dev/null
+++ b/libsarp/link.cpp
@@ -0,0 +1,34 @@
+#include "link.hpp"
+#include <cstring>
+
+bool operator < (const sockaddr_in6 addr0, const sockaddr_in6 addr1)
+{
+  return memcmp(addr0.sin6_addr.s6_addr, addr1.sin6_addr.s6_addr, sizeof(addr0.sin6_addr)) && addr0.sin6_port < addr1.sin6_port;
+}
+
+namespace sarp
+{
+
+  int Link::Run()
+  {
+    uint8_t recvbuff[1500];
+    sockaddr_in6 remote;
+    socklen_t remotelen;
+    ssize_t ret = 0;
+    do
+    {
+      ret = recvfrom(sockfd, recvbuff, sizeof(recvbuff),0, (sockaddr *) &remote, &remotelen);
+      if(ret > 0)
+      {
+        auto itr = sessions.find(remote);
+        if(itr == sessions.end())
+        {
+          sessions[remote] = std::make_unique<PeerSession>(crypto, remote);
+        }
+        sessions[remote]->RecvFrom(recvbuff, ret);
+      }
+    }
+    while(ret != -1);
+    return -1;
+  }
+}
diff --git a/libsarp/link.hpp b/libsarp/link.hpp
new file mode 100644
index 000000000..53a10a95b
--- /dev/null
+++ b/libsarp/link.hpp
@@ -0,0 +1,64 @@
+#ifndef LIBSARP_LINK_HPP
+#define LIBSARP_LINK_HPP
+#include <netinet/in.h>
+#include <sarp/crypto.h>
+#include <cstdint>
+#include <map>
+#include <memory>
+
+namespace sarp
+{
+  struct PeerSession
+  {
+    sockaddr_in6 remoteAddr;
+    sarp_pubkey_t remotePubkey;
+    sarp_sharedkey_t sessionKey;
+
+    uint64_t lastRX;
+
+    sarp_crypto * _crypto;
+    
+    enum State
+    {
+      eHandshake0,
+      eHandshake1,
+      eHandshake2,
+      eHandshake3,
+      eEstablished,
+      eTimeout
+    };
+
+    State state;
+
+    /** inbound session */
+    PeerSession(sarp_crypto * crypto, sockaddr_in6 remote);
+
+    /** outbound session */
+    PeerSession(sarp_crypto * crypto, sockaddr_in6 remote, sarp_pubkey_t remotePubkey);
+
+    PeerSession & operator=(const PeerSession & other);
+    
+    void SendTo(int sockfd, const uint8_t * buff, std::size_t sz);
+
+    void RecvFrom(const uint8_t * buff, std::size_t sz);
+    
+  };
+
+  typedef std::unique_ptr<PeerSession> PeerSession_ptr;
+  
+  struct Link
+  {
+    typedef std::map<sockaddr_in6, PeerSession_ptr> Sessions;
+ 
+    int sockfd;
+    Sessions sessions;
+    sarp_seckey_t transportSecKey;
+    sarp_pubkey_t transportPubKey;
+
+    sarp_crypto * crypto;
+    
+    int Run();
+  };
+}
+
+#endif
diff --git a/libsarp/router.cpp b/libsarp/router.cpp
new file mode 100644
index 000000000..ba9f48193
--- /dev/null
+++ b/libsarp/router.cpp
@@ -0,0 +1,13 @@
+#include <sarp/router.h>
+#include <sarp/link.h>
+#include "link.hpp"
+#include <vector>
+
+namespace sarp
+{
+  struct Router
+  {
+    std::vector<Link> activeLinks;
+  };
+}
+