diff --git a/llarp/crypto/crypto.cpp b/llarp/crypto/crypto.cpp
index 0e01813040..89843b6dfd 100644
--- a/llarp/crypto/crypto.cpp
+++ b/llarp/crypto/crypto.cpp
@@ -238,7 +238,7 @@ namespace llarp
         SharedSecret& secret,
         const SymmNonce& nonce,
         const RouterID& remote,
-        old_uspan payload)
+        std::span<uint8_t> payload)
     {
         // derive shared key
         if (!crypto::dh_client(secret, remote, shared_key, nonce))
@@ -262,7 +262,7 @@ namespace llarp
         SharedSecret& shared,
         const PubKey& remote,
         const SymmNonce& nonce,
-        old_uspan encrypted)
+        std::span<uint8_t> encrypted)
     {
         // derive shared secret using shared secret and our secret key (and nonce)
         if (!crypto::dh_server(shared, remote, local_sk, nonce))
diff --git a/llarp/crypto/crypto.hpp b/llarp/crypto/crypto.hpp
index 0c4c9f6e15..5a35ffc396 100644
--- a/llarp/crypto/crypto.hpp
+++ b/llarp/crypto/crypto.hpp
@@ -68,7 +68,7 @@ namespace llarp
             SharedSecret& secret,
             const SymmNonce& nonce,
             const RouterID& remote,
-            old_uspan payload);
+            std::span<uint8_t> payload);
 
         // void derive_encrypt_outer_wrapping(
         //     const Ed25519SecretKey& shared_key,
@@ -85,7 +85,7 @@ namespace llarp
             SharedSecret& shared,
             const PubKey& remote,
             const SymmNonce& nonce,
-            old_uspan encrypted);
+            std::span<uint8_t> encrypted);
 
         std::array<unsigned char, 32> make_scalar(const PubKey& k, uint64_t domain);
 
diff --git a/llarp/crypto/types.cpp b/llarp/crypto/types.cpp
index 4984a2cb62..80cd8ab916 100644
--- a/llarp/crypto/types.cpp
+++ b/llarp/crypto/types.cpp
@@ -145,14 +145,14 @@ namespace llarp
             throw std::runtime_error{"Server DH failed -- should this even ever happen?"};
     }
 
-    void shared_kx_data::encrypt(old_uspan data)
+    void shared_kx_data::encrypt(std::span<uint8_t> data)
     {
         if (!crypto::xchacha20(data.data(), data.size(), shared_secret, nonce))
             throw std::runtime_error{"xchacha20 encryption failed -- should this even ever happen?"};
     }
 
     // identical methods, separated for clarity of use/logging for now
-    void shared_kx_data::decrypt(old_uspan data)
+    void shared_kx_data::decrypt(std::span<uint8_t> data)
     {
         if (!crypto::xchacha20(data.data(), data.size(), shared_secret, nonce))
             throw std::runtime_error{"xchacha20 decryption failed -- should this even ever happen?"};
diff --git a/llarp/crypto/types.hpp b/llarp/crypto/types.hpp
index 6857e6b5d8..382c891af9 100644
--- a/llarp/crypto/types.hpp
+++ b/llarp/crypto/types.hpp
@@ -67,13 +67,13 @@ namespace llarp
         explicit Ed25519PrivateData(const AlignedBuffer<64>& key_and_hash) : AlignedBuffer<64>(key_and_hash) {}
 
         // Returns writeable access to the 32-byte Ed25519 Private Scalar
-        old_uspan scalar() { return {data(), 32}; }
+        std::span<uint8_t> scalar() { return {data(), 32}; }
         // Returns readable access to the 32-byte Ed25519 Private Scalar
-        const_uspan scalar() const { return {data(), 32}; }
+        uspan scalar() const { return {data(), 32}; }
         // Returns writeable access to the 32-byte Ed25519 Signing Hash
-        old_uspan signing_hash() { return {data() + 32, 32}; }
+        std::span<uint8_t> signing_hash() { return {data() + 32, 32}; }
         // Returns readable access to the 32-byte Ed25519 Signing Hash
-        const_uspan signing_hash() const { return {data() + 32, 32}; }
+        uspan signing_hash() const { return {data() + 32, 32}; }
 
         PubKey to_pubkey() const;
 
@@ -125,9 +125,9 @@ namespace llarp
 
         void server_dh(const Ed25519SecretKey& local_sk);
 
-        void encrypt(old_uspan data);
+        void encrypt(std::span<uint8_t> data);
 
-        void decrypt(old_uspan enc);
+        void decrypt(std::span<uint8_t> enc);
     };
 
 }  // namespace llarp
diff --git a/llarp/dns/message.cpp b/llarp/dns/message.cpp
index 22a7caba69..2f48e0937f 100644
--- a/llarp/dns/message.cpp
+++ b/llarp/dns/message.cpp
@@ -46,7 +46,7 @@ namespace llarp::dns
         return true;
     }
 
-    bool MessageHeader::decode(std::span<unsigned char> b)
+    bool MessageHeader::decode(std::span<uint8_t> b)
     {
         std::memcpy(_data.data(), b.data(), sizeof(_data));
         for (auto& d : _data)
diff --git a/llarp/dns/message.hpp b/llarp/dns/message.hpp
index e489111edb..7492d8836b 100644
--- a/llarp/dns/message.hpp
+++ b/llarp/dns/message.hpp
@@ -39,7 +39,7 @@ namespace llarp
 
             bool Decode(llarp_buffer_t* buf) override;
 
-            bool decode(std::span<unsigned char> b) override;
+            bool decode(std::span<uint8_t> b) override;
 
             nlohmann::json ToJSON() const override;
 
@@ -80,7 +80,7 @@ namespace llarp
 
             bool Decode(llarp_buffer_t* buf) override;
 
-            bool decode(std::span<unsigned char> /* b */) override { return {}; };  // TODO:
+            bool decode(std::span<uint8_t> /* b */) override { return {}; };  // TODO:
 
             // Wrapper around Encode that encodes into a new buffer and returns it
             std::vector<uint8_t> to_buffer() const;
diff --git a/llarp/dns/question.hpp b/llarp/dns/question.hpp
index a087d2afb9..43bb674efd 100644
--- a/llarp/dns/question.hpp
+++ b/llarp/dns/question.hpp
@@ -21,7 +21,7 @@ namespace llarp::dns
 
         bool Decode(llarp_buffer_t* buf) override;
 
-        bool decode(std::span<unsigned char> /* b */) override { return {}; }
+        bool decode(std::span<uint8_t> /* b */) override { return {}; }
 
         std::string to_string() const;
 
diff --git a/llarp/dns/rr.hpp b/llarp/dns/rr.hpp
index be7e5488b0..e2b3e2e8af 100644
--- a/llarp/dns/rr.hpp
+++ b/llarp/dns/rr.hpp
@@ -25,7 +25,7 @@ namespace llarp::dns
 
         bool Decode(llarp_buffer_t* buf) override;
 
-        bool decode(std::span<unsigned char> /* b */) override { return {}; };
+        bool decode(std::span<uint8_t> /* b */) override { return {}; };
 
         nlohmann::json ToJSON() const override;
 
diff --git a/llarp/dns/serialize.hpp b/llarp/dns/serialize.hpp
index 5020d2b2bf..d6505b0115 100644
--- a/llarp/dns/serialize.hpp
+++ b/llarp/dns/serialize.hpp
@@ -19,7 +19,7 @@ namespace llarp::dns
         /// decode entity from buffer
         virtual bool Decode(llarp_buffer_t* buf) = 0;
 
-        virtual bool decode(std::span<unsigned char> b) = 0;
+        virtual bool decode(std::span<uint8_t> b) = 0;
 
         /// convert this whatever into json
         virtual nlohmann::json ToJSON() const = 0;
diff --git a/llarp/handlers/session.cpp b/llarp/handlers/session.cpp
index ab59cde7a6..e561a0b10c 100644
--- a/llarp/handlers/session.cpp
+++ b/llarp/handlers/session.cpp
@@ -137,7 +137,7 @@ namespace llarp::handlers
         update_and_publish_localcc(get_current_client_intros(), _srv_records);
     }
 
-    // static std::atomic<bool> testnet_trigger = false;
+    static std::atomic<bool> testnet_trigger = false;
 
     void SessionEndpoint::start_tickers()
     {
@@ -152,25 +152,24 @@ namespace llarp::handlers
                 },
                 true);
 
-            // if (not testnet_trigger)
-            // {
-            //     testnet_trigger = true;
-
-            //     _router.loop()->call_later(5s, [this]() {
-            //         try
-            //         {
-            //             RouterID cpk{oxenc::from_base32z("4g96taie3et7dbkumk5x6rycskaxxsgjeiunpe61469z1gsbfkuo")};
-            //             log::info(logcat, "Beginning session init to client: {}", cpk.to_network_address(false));
-            //             _initiate_session(
-            //                 NetworkAddress::from_pubkey(cpk, true), [](ip_v) { log::critical(logcat, "FUCK YEAH");
-            //                 });
-            //         }
-            //         catch (const std::exception& e)
-            //         {
-            //             log::critical(logcat, "Failed to parse client netaddr: {}", e.what());
-            //         }
-            //     });
-            // }
+            if (not testnet_trigger)
+            {
+                testnet_trigger = true;
+
+                _router.loop()->call_later(5s, [this]() {
+                    try
+                    {
+                        RouterID cpk{oxenc::from_base32z("acit6x8kwxdehpkzrpunw5nb8mf4w5u8tn3ojmxit9rpnhhhp81y")};
+                        log::info(logcat, "Beginning session init to client: {}", cpk.to_network_address(false));
+                        _initiate_session(
+                            NetworkAddress::from_pubkey(cpk, true), [](ip_v) { log::critical(logcat, "FUCK YEAH"); });
+                    }
+                    catch (const std::exception& e)
+                    {
+                        log::critical(logcat, "Failed to parse client netaddr: {}", e.what());
+                    }
+                });
+            }
         }
         else
             log::info(logcat, "SessionEndpoint configured to NOT publish ClientContact...");
@@ -630,7 +629,11 @@ namespace llarp::handlers
                         if (auto maybe_ip = _router.tun_endpoint()->map_session_to_local_ip(session->remote()))
                         {
                             log::info(
-                                logcat, "TUN device successfully routing session to remote: {}", session->remote());
+                                logcat,
+                                "TUN device successfully routing session (remote: {}) via local ip: {}",
+                                session->remote(),
+                                std::holds_alternative<ipv4>(*maybe_ip) ? std::get<ipv4>(*maybe_ip).to_string()
+                                                                        : std::get<ipv6>(*maybe_ip).to_string());
 
                             return hook(*maybe_ip);
                         }
diff --git a/llarp/handlers/tun.hpp b/llarp/handlers/tun.hpp
index 5992813593..f33d4f090b 100644
--- a/llarp/handlers/tun.hpp
+++ b/llarp/handlers/tun.hpp
@@ -144,15 +144,6 @@ namespace llarp::handlers
 
         void start_poller();
 
-        //   protected:
-        struct WritePacket
-        {
-            uint64_t seqno;
-            IPPacket pkt;
-
-            bool operator>(const WritePacket& other) const { return seqno > other.seqno; }
-        };
-
         // Stores assigned IP's for each session in/out of this lokinet instance
         //  - Reserved local addresses is directly pre-loaded from config
         //  - Persisting address map is directly pre-loaded from config
diff --git a/llarp/link/link_manager.cpp b/llarp/link/link_manager.cpp
index 858f4d4adf..e21ba885be 100644
--- a/llarp/link/link_manager.cpp
+++ b/llarp/link/link_manager.cpp
@@ -24,7 +24,7 @@ namespace llarp
 {
     static auto logcat = llarp::log::Cat("lquic");
 
-    static constexpr auto static_shared_key = "Lokinet static shared secret key"_usv;
+    static constexpr auto static_shared_key = "Lokinet static shared secret key"_usp;
 
     static static_secret make_static_secret(const Ed25519SecretKey& sk)
     {
diff --git a/llarp/messages/exit.hpp b/llarp/messages/exit.hpp
index f288fdf09f..f911b501f3 100644
--- a/llarp/messages/exit.hpp
+++ b/llarp/messages/exit.hpp
@@ -9,9 +9,7 @@ namespace llarp
 {
     /*
         TODO:
-          - ADD PUBKEY FIELD OR AT LEAST SEE WHY LINKMANAGER::HANDLE_OBTAIN_EXIT() LOOKS FOR ONE
-
-          - change these parameters to ustringviews and ustrings where needed after bumping oxenc
+          - change these parameters to uspans where needed after bumping oxenc
           - change std::string sig(64, '\0') --> std::array<unsigned char, 64> sig
     */
 
diff --git a/llarp/util/buffer.hpp b/llarp/util/buffer.hpp
index fbf7593cc6..ba0b98dd11 100644
--- a/llarp/util/buffer.hpp
+++ b/llarp/util/buffer.hpp
@@ -21,74 +21,27 @@
 
 namespace llarp
 {
-    using const_cspan = oxenc::const_span<char>;
-    using const_uspan = oxenc::const_span<unsigned char>;
-    using const_span = oxenc::const_span<std::byte>;
-
-    using old_cspan = std::span<char>;
-    using old_uspan = std::span<uint8_t>;
-    using old_bspan = std::span<std::byte>;
+    using cspan = oxenc::const_span<const char>;
+    using uspan = oxenc::const_span<const unsigned char>;
+    using span = oxenc::const_span<const std::byte>;
 
     using ustring = std::basic_string<uint8_t>;
     using ustring_view = std::basic_string_view<uint8_t>;
     using bstring = std::basic_string<std::byte>;
     using bstring_view = std::basic_string_view<std::byte>;
 
-    namespace detail
-    {
-        template <size_t N>
-        struct bsv_literal
-        {
-            consteval bsv_literal(const char (&s)[N])
-            {
-                for (size_t i = 0; i < N; i++)
-                    str[i] = static_cast<std::byte>(s[i]);
-            }
-            std::byte str[N];  // we keep the null on the end, in case you pass .data() to a C func
-            using size = std::integral_constant<size_t, N - 1>;
-        };
-        template <size_t N>
-        struct usv_literal
-        {
-            consteval usv_literal(const char (&s)[N])
-            {
-                for (size_t i = 0; i < N; i++)
-                    str[i] = static_cast<unsigned char>(s[i]);
-            }
-            unsigned char str[N];  // we keep the null on the end, in case you pass .data() to a C func
-            using size = std::integral_constant<size_t, N - 1>;
-        };
-    }  // namespace detail
-
     inline ustring operator""_us(const char* str, size_t len) noexcept
     {
         return {reinterpret_cast<const unsigned char*>(str), len};
     }
 
-    template <detail::usv_literal UStr>
-    constexpr ustring_view operator""_usv() noexcept
-    {
-        return {UStr.str, decltype(UStr)::size::value};
-    }
-
-    template <detail::bsv_literal BStr>
-    constexpr bstring_view operator""_bsv()
-    {
-        return {BStr.str, decltype(BStr)::size::value};
-    }
-
-    inline bstring operator""_bs(const char* str, size_t len) noexcept
-    {
-        return {reinterpret_cast<const std::byte*>(str), len};
-    }
-
     // Helper function to switch between string_view and ustring_view
     inline ustring_view to_usv(std::string_view v) { return {reinterpret_cast<const uint8_t*>(v.data()), v.size()}; }
 
     template <oxenc::basic_char T>
-    inline old_uspan to_uspan(std::basic_string<T>& v)
+    inline std::span<uint8_t> to_uspan(std::basic_string<T>& v)
     {
-        return old_uspan{reinterpret_cast<uint8_t*>(v.data()), v.size()};
+        return std::span<uint8_t>{reinterpret_cast<uint8_t*>(v.data()), v.size()};
     }
 }  // namespace llarp