diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 8403905ae..20b1ffe50 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -54,3 +54,5 @@ jobs:
     - name: Building release version
       run:
          cargo build -Z build-std=std,core,alloc,panic_abort --target x86_64-unknown-hermit --release
+      env:
+         RUSTFLAGS: -Clinker-plugin-lto
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 88f510ebc..97b4729de 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -62,6 +62,8 @@ jobs:
     - name: Building release version
       run:
          cargo build -Z build-std=std,core,alloc,panic_abort --target x86_64-unknown-hermit --release
+      env:
+         RUSTFLAGS: -Clinker-plugin-lto
     - name: Build loader (unix)
       working-directory: loader
       run: make
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index ff4129215..cf6ca500f 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -24,7 +24,7 @@ build:
   stage: build
   script:
     - cargo build -Z build-std=std,core,alloc,panic_abort --target x86_64-unknown-hermit
-    - cargo build -Z build-std=std,core,alloc,panic_abort --target x86_64-unknown-hermit --release
+    - RUSTFLAGS="-Clinker-plugin-lto" cargo build -Z build-std=std,core,alloc,panic_abort --target x86_64-unknown-hermit --release
   image: ${IMAGE}
   cache:
     paths:
diff --git a/.travis.yml b/.travis.yml
index 6198a7e6a..94382b996 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -30,7 +30,7 @@ jobs:
         - sudo -E sudo -u $USER -E bash -c "HERMIT_VERBOSE=1 HERMIT_CPUS=2 $HOME/.cargo/bin/uhyve target/x86_64-unknown-hermit/debug/rusty_demo"
     - name: "Test Release Build"
       script:
-        - cargo build -Z build-std=std,core,alloc,panic_abort --target x86_64-unknown-hermit --release
+        - RUSTFLAGS="-Clinker-plugin-lto" cargo build -Z build-std=std,core,alloc,panic_abort --target x86_64-unknown-hermit --release
         - sudo -E sudo -u $USER -E bash -c "HERMIT_VERBOSE=1 $HOME/.cargo/bin/uhyve target/x86_64-unknown-hermit/release/rusty_demo"
         - sudo -E sudo -u $USER -E bash -c "HERMIT_VERBOSE=1 HERMIT_CPUS=2 $HOME/.cargo/bin/uhyve target/x86_64-unknown-hermit/release/rusty_demo"
 
diff --git a/Cargo.lock b/Cargo.lock
index c6bce1ddc..fc406fe82 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -21,7 +21,7 @@ version = "0.2.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d9b39be18770d11421cdb1b9947a45dd3f37e93092cbf377614828a319d5fee8"
 dependencies = [
- "hermit-abi 0.1.13",
+ "hermit-abi 0.1.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc",
  "winapi 0.3.8",
 ]
@@ -52,9 +52,12 @@ checksum = "08c48aae112d48ed9f069b33538ea9e3e90aa263cfa3d1c24309612b1f7472de"
 
 [[package]]
 name = "bytes"
-version = "0.5.4"
+version = "0.5.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "130aac562c0dd69c56b3b1cc8ffd2e17be31d0b6c25b61c96b76231aa23e39e1"
+checksum = "118cf036fbb97d0816e3c34b2d7a1e8cfc60f68fcf63d550ddbe9bd5f59c213b"
+dependencies = [
+ "loom",
+]
 
 [[package]]
 name = "cc"
@@ -80,9 +83,9 @@ dependencies = [
 
 [[package]]
 name = "chunked_transfer"
-version = "1.1.0"
+version = "1.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5b89647f09b9f4c838cb622799b2843e4e13bff64661dab9a0362bb92985addd"
+checksum = "1d29eb15132782371f71da8f947dba48b3717bdb6fa771b9b434d645e40a7193"
 
 [[package]]
 name = "clap"
@@ -101,9 +104,9 @@ dependencies = [
 
 [[package]]
 name = "compiler_builtins"
-version = "0.1.28"
+version = "0.1.32"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "439a6fab343b1dab347823537734a5cd4ae6ae2000b465ab886f64cdb723bd14"
+checksum = "7bc4ac2c824d2bfc612cba57708198547e9a26943af0632aff033e0693074d5c"
 dependencies = [
  "rustc-std-workspace-core",
 ]
@@ -158,12 +161,13 @@ dependencies = [
 
 [[package]]
 name = "crossbeam-queue"
-version = "0.2.1"
+version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c695eeca1e7173472a32221542ae469b3e9aac3a4fc81f7696bcad82029493db"
+checksum = "774ba60a54c213d409d5353bda12d49cd68d14e45036a285234c8d6f91f92570"
 dependencies = [
  "cfg-if",
  "crossbeam-utils",
+ "maybe-uninit",
 ]
 
 [[package]]
@@ -183,6 +187,19 @@ version = "1.5.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bb1f6b1ce1c140482ea30ddd3335fc0024ac7ee112895426e0a629a6c20adfe3"
 
+[[package]]
+name = "generator"
+version = "0.6.21"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "add72f17bb81521258fcc8a7a3245b1e184e916bfbe34f0ea89558f440df5c68"
+dependencies = [
+ "cc",
+ "libc",
+ "log",
+ "rustc_version",
+ "winapi 0.3.8",
+]
+
 [[package]]
 name = "hdrhist"
 version = "0.5.0"
@@ -191,20 +208,20 @@ checksum = "51b22edfb537aaffec56e77d3116a1dd0a0fa8bb5a8bd7d6d4a522132c9bb383"
 
 [[package]]
 name = "hermit-abi"
-version = "0.1.13"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "91780f809e750b0a89f5544be56617ff6b1227ee485bcb06ebe10cdf89bd3b71"
+version = "0.1.14"
 dependencies = [
+ "compiler_builtins",
  "libc",
+ "rustc-std-workspace-core",
 ]
 
 [[package]]
 name = "hermit-abi"
 version = "0.1.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b9586eedd4ce6b3c498bc3b4dd92fc9f11166aa908a914071953768066c67909"
 dependencies = [
- "compiler_builtins",
  "libc",
- "rustc-std-workspace-core",
 ]
 
 [[package]]
@@ -257,9 +274,9 @@ checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 
 [[package]]
 name = "libc"
-version = "0.2.70"
+version = "0.2.71"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3baa92041a6fec78c687fa0cc2b3fae8884f743d672cf551bed1d6dac6988d0f"
+checksum = "9457b06509d27052635f90d6466700c65095fdf75409b3fbdd903e988b886f49"
 dependencies = [
  "rustc-std-workspace-core",
 ]
@@ -279,11 +296,22 @@ dependencies = [
  "cfg-if",
 ]
 
+[[package]]
+name = "loom"
+version = "0.3.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4ecc775857611e1df29abba5c41355cdf540e7e9d4acfdf0f355eefee82330b7"
+dependencies = [
+ "cfg-if",
+ "generator",
+ "scoped-tls",
+]
+
 [[package]]
 name = "managed"
-version = "0.7.1"
+version = "0.7.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fdcec5e97041c7f0f1c5b7d93f12e57293c831c646f4cc7a5db59460c7ea8de6"
+checksum = "c75de51135344a4f8ed3cfe2720dc27736f7711989703a0b43aadf3753c55577"
 
 [[package]]
 name = "matches"
@@ -308,9 +336,9 @@ dependencies = [
 
 [[package]]
 name = "num-integer"
-version = "0.1.42"
+version = "0.1.43"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3f6ea62e9d81a77cd3ee9a2a5b9b609447857f3d358704331e4ef39eb247fcba"
+checksum = "8d59457e662d541ba17869cf51cf177c0b5f0cbf476c66bdc90bf1edac4f875b"
 dependencies = [
  "autocfg",
  "num-traits",
@@ -318,9 +346,9 @@ dependencies = [
 
 [[package]]
 name = "num-traits"
-version = "0.2.11"
+version = "0.2.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c62be47e61d1842b9170f0fdeec8eba98e60e90e5446449a0545e5152acd7096"
+checksum = "ac267bcc07f48ee5f8935ab0d24f316fb722d7a1292e2913f0cc196b29ffd611"
 dependencies = [
  "autocfg",
 ]
@@ -331,7 +359,7 @@ version = "1.13.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "05499f3756671c15885fee9034446956fff3f243d6077b91e5767df161f766b3"
 dependencies = [
- "hermit-abi 0.1.13",
+ "hermit-abi 0.1.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc",
 ]
 
@@ -343,27 +371,27 @@ checksum = "d4fd5641d01c8f18a23da7b6fe29298ff4b55afcccdf78973b24cf3175fee32e"
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.13"
+version = "1.0.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "53f5ffe53a6b28e37c9c1ce74893477864d64f74778a93a4beb43c8fa167f639"
+checksum = "beae6331a816b1f65d04c45b078fd8e6c93e8071771f41b8163255bbd8d7c8fa"
 dependencies = [
  "unicode-xid",
 ]
 
 [[package]]
 name = "quote"
-version = "1.0.6"
+version = "1.0.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "54a21852a652ad6f610c9510194f398ff6f8692e334fd1145fed931f7fbe44ea"
+checksum = "aa563d17ecb180e500da1cfd2b028310ac758de548efdd203e18f283af693f37"
 dependencies = [
  "proc-macro2",
 ]
 
 [[package]]
 name = "raw-cpuid"
-version = "8.0.0"
+version = "8.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9e9c0f2091b865a94bc3c9d34896cc4bbda04453453c391f7eb224491be9ae1d"
+checksum = "5ab01b333691cd32fa882476c0fd735e98a85bf080853728936210562d0cdca6"
 dependencies = [
  "bitflags",
  "cc",
@@ -372,10 +400,11 @@ dependencies = [
 
 [[package]]
 name = "rayon"
-version = "1.3.0"
+version = "1.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "db6ce3297f9c85e16621bb8cca38a06779ffc31bb8184e1be4bed2be4678a098"
+checksum = "62f02856753d04e03e26929f820d0a0a337ebe71f849801eea335d464b349080"
 dependencies = [
+ "autocfg",
  "crossbeam-deque",
  "either",
  "rayon-core",
@@ -383,9 +412,9 @@ dependencies = [
 
 [[package]]
 name = "rayon-core"
-version = "1.7.0"
+version = "1.7.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "08a89b46efaf957e52b18062fb2f4660f8b8a4dde1807ca002690868ef2c85a9"
+checksum = "e92e15d89083484e11353891f1af602cc661426deb9564c298b270c726973280"
 dependencies = [
  "crossbeam-deque",
  "crossbeam-queue",
@@ -438,6 +467,12 @@ dependencies = [
  "winapi-util",
 ]
 
+[[package]]
+name = "scoped-tls"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "332ffa32bf586782a3efaeb58f127980944bbc8c4d6913a86107ac2a5ab24b28"
+
 [[package]]
 name = "scopeguard"
 version = "1.1.0"
@@ -461,18 +496,18 @@ checksum = "388a1df253eca08550bef6c72392cfe7c30914bf41df5269b68cbd6ff8f570a3"
 
 [[package]]
 name = "serde"
-version = "1.0.110"
+version = "1.0.113"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "99e7b308464d16b56eba9964e4972a3eee817760ab60d88c3f86e1fecb08204c"
+checksum = "6135c78461981c79497158ef777264c51d9d0f4f3fc3a4d22b915900e42dac6a"
 dependencies = [
  "serde_derive",
 ]
 
 [[package]]
 name = "serde_derive"
-version = "1.0.110"
+version = "1.0.113"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "818fbf6bfa9a42d3bfcaca148547aa00c7b915bec71d1757aa2d44ca68771984"
+checksum = "93c5eaa17d0954cb481cdcfffe9d84fcfa7a1a9f2349271e678677be4c26ae31"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -481,21 +516,15 @@ dependencies = [
 
 [[package]]
 name = "serde_repr"
-version = "0.1.5"
+version = "0.1.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cd02c7587ec314570041b2754829f84d873ced14a96d1fd1823531e11db40573"
+checksum = "2dc6b7951b17b051f3210b063f12cc17320e2fe30ae05b0fe2a3abb068551c76"
 dependencies = [
  "proc-macro2",
  "quote",
  "syn",
 ]
 
-[[package]]
-name = "smallvec"
-version = "1.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c7cb5678e1615754284ec264d9bb5b4c27d2018577fd90ac0ceb578591ed5ee4"
-
 [[package]]
 name = "smoltcp"
 version = "0.6.0"
@@ -504,7 +533,6 @@ checksum = "0fe46639fd2ec79eadf8fe719f237a7a0bd4dac5d957f1ca5bbdbc1c3c39e53a"
 dependencies = [
  "bitflags",
  "byteorder",
- "log",
  "managed",
 ]
 
@@ -516,9 +544,9 @@ checksum = "8ea5119cdb4c55b55d432abb513a0429384878c15dde60cc77b1c99de1a95a6a"
 
 [[package]]
 name = "syn"
-version = "1.0.22"
+version = "1.0.32"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1425de3c33b0941002740a420b1a906a350b88d08b82b2c8a01035a3f9447bac"
+checksum = "a994520748611c17d163e81b6c4a4b13d11b7f63884362ab2efac3aa9cf16d00"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -557,6 +585,12 @@ dependencies = [
  "url",
 ]
 
+[[package]]
+name = "tinyvec"
+version = "0.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "53953d2d3a5ad81d9f844a32f14ebb121f50b650cd59d0ee2a07cf13c617efed"
+
 [[package]]
 name = "unicode-bidi"
 version = "0.3.4"
@@ -568,11 +602,11 @@ dependencies = [
 
 [[package]]
 name = "unicode-normalization"
-version = "0.1.12"
+version = "0.1.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5479532badd04e128284890390c1e876ef7a993d0570b3597ae43dfa1d59afa4"
+checksum = "6fb19cf769fa8c6a80a162df694621ebeb4dafb606470b2b2fce0be40a98a977"
 dependencies = [
- "smallvec",
+ "tinyvec",
 ]
 
 [[package]]
@@ -660,9 +694,9 @@ checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
 
 [[package]]
 name = "x86"
-version = "0.33.0"
+version = "0.34.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2786ac694ed572ab5d2bbcd9e188805dba26b3501973dd69718914fb3d4a5a69"
+checksum = "c146cbc47471e076987378c159a7aa8fa434680c6fbddca59fe6f40f1591c819"
 dependencies = [
  "bit_field",
  "bitflags",
diff --git a/Cargo.toml b/Cargo.toml
index 9b3b53128..983704811 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -12,7 +12,7 @@ exclude = ["target", "loader", "libhermit-rs"]
 opt-level = 3
 debug = false
 rpath = false
-lto = false
+lto = "thin"
 debug-assertions = false
 
 [profile.dev]
diff --git a/README.md b/README.md
index a54aba009..0f634a1da 100644
--- a/README.md
+++ b/README.md
@@ -180,6 +180,21 @@ The resulting "hypervisor-ready" binary then can be found in `target/x86_64-unkn
 
 A simple example is published at [rusty-demo](https://github.com/hermitcore/rusty-demo).
 
+To enable *Link Time Optimization* (LTO), please extend the release configuration in *Cargo.toml* as follows:
+
+```toml
+[profile.release]
+opt-level = 3
+lto = "thin"
+```
+
+In addition, the [Linker-plugin LTO](https://doc.rust-lang.org/rustc/linker-plugin-lto.html) have to be enabled by setting the compiler flag `linker-plugin-lto`.
+In this case, the release version have to build as follows:
+
+```sh
+RUSTFLAGS="-Clinker-plugin-lto" cargo build -Z build-std=std,core,alloc,panic_abort --target x86_64-unknown-hermit --release
+```
+
 ## Network support
 
 To enable an ethernet device, we have to setup a tap device on the
diff --git a/demo/Cargo.toml b/demo/Cargo.toml
index b7be027a9..4cd2726a9 100644
--- a/demo/Cargo.toml
+++ b/demo/Cargo.toml
@@ -9,7 +9,7 @@ publish = false
 rayon = "1.3.0"
 
 [target.'cfg(all(any(target_arch = "x86_64", target_arch = "aarch64"), target_os = "hermit"))'.dependencies]
-hermit-sys = { path = "../hermit-sys", default-features = false, features = ["smoltcp", "with_submodule"] }
+hermit-sys = { path = "../hermit-sys", default-features = false, features = ["with_submodule"] }
 
 [target.'cfg(target_os = "linux")'.dependencies]
 syscalls = { version = "0.2", default-features = false }
diff --git a/demo/src/main.rs b/demo/src/main.rs
index 2f94417d8..1237755e8 100644
--- a/demo/src/main.rs
+++ b/demo/src/main.rs
@@ -58,11 +58,6 @@ fn main() {
 		stringify!(threading),
 		test_result(threading())
 	);
-	/*println!(
-		"Test {} ... {}",
-		stringify!(random_number),
-		test_result(random_number())
-	);*/
 	println!(
 		"Test {} ... {}",
 		stringify!(pi_sequential),
@@ -103,9 +98,4 @@ fn main() {
 		stringify!(bench_syscall),
 		test_result(bench_syscall())
 	);
-	println!(
-		"Test {} ... {}",
-		stringify!(test_http_request),
-		test_result(test_http_request())
-	);
 }
diff --git a/demo/src/tests/mod.rs b/demo/src/tests/mod.rs
index faedf68a3..aa01eaf06 100644
--- a/demo/src/tests/mod.rs
+++ b/demo/src/tests/mod.rs
@@ -346,29 +346,3 @@ pub fn matrix_setup(size_x: usize, size_y: usize) -> vec::Vec<vec::Vec<f64>> {
 
 	matrix
 }
-
-fn send_http_rquest() -> Result<Vec<u8>, std::io::Error> {
-	let mut stream = TcpStream::connect("10.0.5.1:7878")?;
-	let buf =
-		b"GET / HTTP/1.1\r\nHost: 10.0.5.1\r\nUser-Agent: hermit/0.3.16\r\nAccept: */*\r\n\r\n";
-	stream.write_all(buf)?;
-
-	let mut buf = Vec::new();
-	stream.read_to_end(&mut buf)?;
-
-	Ok(buf)
-}
-
-pub fn test_http_request() -> Result<(), std::io::Error> {
-	let buf = send_http_rquest()?;
-	let data = str::from_utf8(&buf).unwrap().to_owned();
-
-	//println!("Receive {}", data);
-
-	match data.starts_with("HTTP/1.1 200 OK") {
-		true => println!("Check http response... ok"),
-		_ => println!("Check http response... failed!"),
-	};
-
-	Ok(())
-}
diff --git a/hermit-sys/Cargo.toml b/hermit-sys/Cargo.toml
index 4c3223a9d..c0f286c63 100644
--- a/hermit-sys/Cargo.toml
+++ b/hermit-sys/Cargo.toml
@@ -35,7 +35,9 @@ default-features = false
 version = "0.6.0"
 optional = true
 default-features = false
-features = ["log", "verbose", "std", "ethernet", "socket-udp", "socket-tcp", "proto-ipv4", "proto-ipv6"]
+features = ["std", "ethernet", "socket-udp", "socket-tcp", "proto-ipv4", "proto-ipv6"]
+# to increase the output the features log and verbose should be enabled
+#features = ["log", "verbose", "std", "ethernet", "socket-udp", "socket-tcp", "proto-ipv4", "proto-ipv6"]
 
 [dependencies.crossbeam-channel]
 version = "0.4"
diff --git a/libhermit-rs b/libhermit-rs
index e4212aa3b..bc1d5d866 160000
--- a/libhermit-rs
+++ b/libhermit-rs
@@ -1 +1 @@
-Subproject commit e4212aa3b368a44ab4281037edb067fe803bbde2
+Subproject commit bc1d5d8665003efb4594ffff35857883e54c6ee2
diff --git a/loader b/loader
index 8d6047a43..23e217d92 160000
--- a/loader
+++ b/loader
@@ -1 +1 @@
-Subproject commit 8d6047a43646a09d927c563e1433b67d9d67df78
+Subproject commit 23e217d925ef57892792fb384d49596485c5e6df