diff --git a/helmetsrv.cpp b/helmetsrv.cpp
index 2507c37..857ff37 100644
--- a/helmetsrv.cpp
+++ b/helmetsrv.cpp
@@ -10,7 +10,7 @@
 
 std::expected<void, std::string> Run() {
         ServConfig config;
-	std::string confdir(SRV_CONFDIR);
+        std::string confdir(SRV_CONFDIR);
         auto readRes = config.Read(confdir + "/" + "helmetsrv.conf");
         if (!readRes) {
                 return std::unexpected("Read config error: " + readRes.error());
diff --git a/networkaux.cpp b/networkaux.cpp
index 28d04b7..545d20d 100644
--- a/networkaux.cpp
+++ b/networkaux.cpp
@@ -7,11 +7,26 @@ extern "C" {
 #include <format>
 #include <expected>
 #include <string>
+#include <cmath>
 
 #include <networkaux.hpp>
 #include <stringaux.hpp>
 
-std::expected<uint32_t, std::string> netprefix(const std::string network) {
+uint netcapa6(const uint prefix) {
+        int hostBits = 128 - prefix;
+        int totalIPs = std::pow(2, hostBits);
+        return totalIPs;
+}
+
+
+uint netcapa4(const uint prefix) {
+        int hostBits = 32 - prefix;
+        int totalIPs = std::pow(2, hostBits);
+        return totalIPs;
+}
+
+
+std::expected<uint, std::string> netprefix(const std::string network) {
         auto hostprefix = split(network, "/");
         if (hostprefix.size() < 2) {
                 return std::unexpected("Incorrect network definition");
@@ -32,13 +47,13 @@ std::expected<std::string, std::string> network(const std::string network) {
 }
 
 
-std::expected<std::string, std::string> nethost6(std::string network, int prefix, uint32_t num) {
+std::expected<std::string, std::string> nethost6(std::string network, uint prefix, uint32_t num) {
         struct in6_addr addr;
         unsigned char mask[16] = {0};
         if (inet_pton(AF_INET6, network.data(), &addr) != 1) {
                 return std::unexpected(std::format("Invalid network address {}", network));
         }
-        for (int i = 0; i < prefix; i++) {
+        for (uint i = 0; i < prefix; i++) {
                 mask[i / 8] |= (1 << (7 - (i % 8)));
         }
         for (int i = 0; i < 16; i++) {
@@ -57,7 +72,7 @@ std::expected<std::string, std::string> nethost6(std::string network, int prefix
 }
 
 
-std::expected<std::string, std::string> nethost4(std::string network, int prefix, uint32_t num) {
+std::expected<std::string, std::string> nethost4(std::string network, uint prefix, uint num) {
         struct in_addr inaddr;
         if (inet_pton(AF_INET, network.data(), &inaddr) != 1) {
                 return std::unexpected(std::format("Invalid network address {}", network));
@@ -70,7 +85,7 @@ std::expected<std::string, std::string> nethost4(std::string network, int prefix
         return std::string(inet_ntoa(ip_addr));
 }
 
-std::expected<std::string, std::string> nethost(std::string network, int prefix, uint32_t num) {
+std::expected<std::string, std::string> nethost(std::string network, uint prefix, uint num) {
         struct sockaddr_in sa;
         if (inet_pton(AF_INET, network.data(), &(sa.sin_addr)) == 1) {
                 return nethost4(network, prefix, num);
diff --git a/networkaux.hpp b/networkaux.hpp
index 4de6f15..3d9f2ca 100644
--- a/networkaux.hpp
+++ b/networkaux.hpp
@@ -4,8 +4,8 @@
 #include <expected>
 #include <string>
 
-std::expected<std::string, std::string> nethost(std::string network, int prefix, uint32_t num);
-std::expected<uint32_t, std::string> netprefix(const std::string network);
+std::expected<std::string, std::string> nethost(std::string network, uint prefix, uint num);
+std::expected<uint, std::string> netprefix(const std::string network);
 std::expected<std::string, std::string> network(const std::string network);
 
 #endif
diff --git a/tservice.cpp b/tservice.cpp
index 576e6d7..5f1e629 100644
--- a/tservice.cpp
+++ b/tservice.cpp
@@ -13,7 +13,6 @@ extern "C" {
 #include <uxlogger.hpp>
 #include <networkaux.hpp>
 
-using namespace std::chrono_literals;
 
 TunService::TunService(int svcport, std::string itunnelnet, std::vector<std::string> ilocalnets) {
         listenport = svcport;
@@ -21,6 +20,20 @@ TunService::TunService(int svcport, std::string itunnelnet, std::vector<std::str
         localnets = ilocalnets;
 }
 
+std::expected<void, std::string> TunService::Init(void) {
+        auto netprefixRes = netprefix(tunnelnet);
+        if (!netprefixRes) {
+                return std::unexpected(netprefixRes.error());
+        }
+        auto networkRes = network(tunnelnet);
+        if (!netprefixRes) {
+                return std::unexpected(networkRes.error());
+        };
+
+        return {};
+}
+
+
 TunService::~TunService() {
         close(listenport);
 }
diff --git a/tservice.hpp b/tservice.hpp
index e3d4a9f..7b6aff3 100644
--- a/tservice.hpp
+++ b/tservice.hpp
@@ -8,10 +8,7 @@
 
 #include <sockhand.hpp>
 
-class ClientSlot {
-private:
-        bool free;
-        int num;
+class NetworkSlot {
 };
 
 
@@ -19,11 +16,12 @@ class TunService {
 private:
         std::string tunnelnet;
         std::vector<std::string> localnets;
+        std::vector<NetworkSlot> netslots;
         int listenport;
         int sock;
-        std::vector<ClientSlot> clientSlots;
 public:
         explicit TunService(int port, std::string tunnelnet, std::vector<std::string> localnets);
+        std::expected<void, std::string> Init(void);
         std::expected<void, std::string> Bind(void);
         std::expected<void, std::string> Listen(void);
         void Handle(int sock);