diff --git a/xtts/.env.example b/xtts/.env.example
index e799d1c..edff6bf 100644
--- a/xtts/.env.example
+++ b/xtts/.env.example
@@ -43,6 +43,13 @@ RVS_PORT=444
 RVS_TLS=true
 RVS_TLS_FALLBACK=true
 RVS_TOKEN=dein_token_hier
+# RVS_SNI: nur noetig, wenn die Box im SELBEN Netz wie der RVS steht und direkt
+# auf dessen interne IP verbinden soll (kein NAT-Hairpin ueber den externen
+# Hostnamen). Dann RVS_HOST=<interne-ip> und hier den Zertifikats-/Hostnamen, fuer
+# den Caddy sein Cert hat. Zuhause / normal: leer lassen.
+#   RVS_HOST=10.0.0.2
+#   RVS_SNI=example.com
+RVS_SNI=
 
 # ─── Optional ─────────────────────────────────────
 # HF_TOKEN=            # nur falls ein HF-gated Modell (z.B. Voxtral) geladen wird
diff --git a/xtts/f5tts/bridge.py b/xtts/f5tts/bridge.py
index 137e7aa..9b7a64b 100644
--- a/xtts/f5tts/bridge.py
+++ b/xtts/f5tts/bridge.py
@@ -51,6 +51,9 @@ RVS_PORT = int(os.getenv("RVS_PORT", "443"))
 RVS_TLS = os.getenv("RVS_TLS", "true").lower() == "true"
 RVS_TLS_FALLBACK = os.getenv("RVS_TLS_FALLBACK", "true").lower() == "true"
 RVS_TOKEN = os.getenv("RVS_TOKEN", "").strip()
+# TLS-Hostname (SNI + Cert), falls RVS_HOST eine IP ist (Box im selben Netz wie
+# der RVS, direkt auf die interne IP). Leer = SNI = RVS_HOST.
+RVS_SNI = os.getenv("RVS_SNI", "").strip()
 
 # F5-TTS Konfiguration
 # ─────────────────────────────────────────────────────────────────
@@ -880,9 +883,14 @@ async def run_loop(runner: F5Runner) -> None:
         url = f"{scheme}://{RVS_HOST}:{RVS_PORT}?token={RVS_TOKEN}"
         masked = url.replace(RVS_TOKEN, "***") if RVS_TOKEN else url
 
+        connect_kwargs = {"ping_interval": 20, "ping_timeout": 10, "max_size": 50 * 1024 * 1024}
+        if use_tls and RVS_SNI:
+            import ssl
+            connect_kwargs["ssl"] = ssl.create_default_context()
+            connect_kwargs["server_hostname"] = RVS_SNI
         try:
-            logger.info("Verbinde zu RVS: %s", masked)
-            async with websockets.connect(url, ping_interval=20, ping_timeout=10, max_size=50 * 1024 * 1024) as ws:
+            logger.info("Verbinde zu RVS: %s%s", masked, f" (SNI {RVS_SNI})" if (use_tls and RVS_SNI) else "")
+            async with websockets.connect(url, **connect_kwargs) as ws:
                 logger.info("RVS verbunden")
                 retry_s = 2
                 tls_fallback_tried = False
diff --git a/xtts/llm-adapter/adapter.py b/xtts/llm-adapter/adapter.py
index 208955c..feda627 100644
--- a/xtts/llm-adapter/adapter.py
+++ b/xtts/llm-adapter/adapter.py
@@ -43,6 +43,9 @@ RVS_PORT = os.getenv("RVS_PORT", "443").strip()
 RVS_TLS = os.getenv("RVS_TLS", "true").lower() == "true"
 RVS_TLS_FALLBACK = os.getenv("RVS_TLS_FALLBACK", "true").lower() == "true"
 RVS_TOKEN = os.getenv("RVS_TOKEN", "").strip()
+# TLS-Hostname (SNI + Cert), falls RVS_HOST eine IP ist (Box im selben Netz wie
+# der RVS, direkt auf die interne IP). Leer = SNI = RVS_HOST.
+RVS_SNI = os.getenv("RVS_SNI", "").strip()
 
 LLAMA_URL = os.getenv("LLAMA_URL", "http://llama:8081").rstrip("/")
 LLM_MODEL = os.getenv("LLM_MODEL", "qwen3-8b")
@@ -419,11 +422,15 @@ async def _run() -> None:
         scheme = "wss" if use_tls else "ws"
         url = f"{scheme}://{RVS_HOST}:{RVS_PORT}?token={RVS_TOKEN}"
         masked = url.replace(RVS_TOKEN, "***") if RVS_TOKEN else url
+        connect_kwargs = {"ping_interval": 20, "ping_timeout": 10, "max_size": 16 * 1024 * 1024}
+        if use_tls and RVS_SNI:
+            import ssl
+            connect_kwargs["ssl"] = ssl.create_default_context()
+            connect_kwargs["server_hostname"] = RVS_SNI
         try:
-            logger.info("Verbinde zu RVS: %s (llama=%s)", masked, LLAMA_URL)
-            async with websockets.connect(
-                url, ping_interval=20, ping_timeout=10, max_size=16 * 1024 * 1024
-            ) as ws:
+            logger.info("Verbinde zu RVS: %s%s (llama=%s)", masked,
+                        f" (SNI {RVS_SNI})" if (use_tls and RVS_SNI) else "", LLAMA_URL)
+            async with websockets.connect(url, **connect_kwargs) as ws:
                 logger.info("RVS verbunden — llm-adapter online")
                 retry_s = 2
                 tls_fallback_tried = False
diff --git a/xtts/voxtral/bridge.py b/xtts/voxtral/bridge.py
index 99bc92e..e2c78bc 100644
--- a/xtts/voxtral/bridge.py
+++ b/xtts/voxtral/bridge.py
@@ -53,6 +53,9 @@ RVS_PORT = int(os.getenv("RVS_PORT", "443"))
 RVS_TLS = os.getenv("RVS_TLS", "true").lower() == "true"
 RVS_TLS_FALLBACK = os.getenv("RVS_TLS_FALLBACK", "true").lower() == "true"
 RVS_TOKEN = os.getenv("RVS_TOKEN", "").strip()
+# TLS-Hostname (SNI + Cert), falls RVS_HOST eine IP ist (Box im selben Netz wie
+# der RVS, direkt auf die interne IP). Leer = SNI = RVS_HOST.
+RVS_SNI = os.getenv("RVS_SNI", "").strip()
 
 VOXTRAL_MODEL = os.getenv("VOXTRAL_MODEL", "mistralai/Voxtral-Mini-3B-2507")
 VOXTRAL_LANGUAGE = os.getenv("VOXTRAL_LANGUAGE", "de")
@@ -744,10 +747,14 @@ async def run_loop(sessions: SessionManager) -> None:
         scheme = "wss" if use_tls else "ws"
         url = f"{scheme}://{RVS_HOST}:{RVS_PORT}?token={RVS_TOKEN}"
         masked = url.replace(RVS_TOKEN, "***") if RVS_TOKEN else url
+        connect_kwargs = {"ping_interval": 20, "ping_timeout": 10, "max_size": 50 * 1024 * 1024}
+        if use_tls and RVS_SNI:
+            import ssl
+            connect_kwargs["ssl"] = ssl.create_default_context()
+            connect_kwargs["server_hostname"] = RVS_SNI
         try:
-            logger.info("Verbinde zu RVS: %s", masked)
-            async with websockets.connect(url, ping_interval=20, ping_timeout=10,
-                                           max_size=50 * 1024 * 1024) as ws:
+            logger.info("Verbinde zu RVS: %s%s", masked, f" (SNI {RVS_SNI})" if (use_tls and RVS_SNI) else "")
+            async with websockets.connect(url, **connect_kwargs) as ws:
                 logger.info("RVS verbunden")
                 retry_s = 2
                 tls_fallback_tried = False
diff --git a/xtts/whisper/bridge.py b/xtts/whisper/bridge.py
index 42e254a..86c928e 100644
--- a/xtts/whisper/bridge.py
+++ b/xtts/whisper/bridge.py
@@ -53,6 +53,9 @@ RVS_PORT = int(os.getenv("RVS_PORT", "443"))
 RVS_TLS = os.getenv("RVS_TLS", "true").lower() == "true"
 RVS_TLS_FALLBACK = os.getenv("RVS_TLS_FALLBACK", "true").lower() == "true"
 RVS_TOKEN = os.getenv("RVS_TOKEN", "").strip()
+# TLS-Hostname (SNI + Cert), falls RVS_HOST eine IP ist (Box im selben Netz wie
+# der RVS, direkt auf die interne IP). Leer = SNI = RVS_HOST.
+RVS_SNI = os.getenv("RVS_SNI", "").strip()
 
 WHISPER_MODEL = os.getenv("WHISPER_MODEL", "small")
 WHISPER_DEVICE = os.getenv("WHISPER_DEVICE", "cuda")
@@ -876,9 +879,14 @@ async def run_loop(runner: WhisperRunner, sessions: SessionManager) -> None:
         scheme = "wss" if use_tls else "ws"
         url = f"{scheme}://{RVS_HOST}:{RVS_PORT}?token={RVS_TOKEN}"
         masked = url.replace(RVS_TOKEN, "***") if RVS_TOKEN else url
+        connect_kwargs = {"ping_interval": 20, "ping_timeout": 10, "max_size": 50 * 1024 * 1024}
+        if use_tls and RVS_SNI:
+            import ssl
+            connect_kwargs["ssl"] = ssl.create_default_context()
+            connect_kwargs["server_hostname"] = RVS_SNI
         try:
-            logger.info("Verbinde zu RVS: %s", masked)
-            async with websockets.connect(url, ping_interval=20, ping_timeout=10, max_size=50 * 1024 * 1024) as ws:
+            logger.info("Verbinde zu RVS: %s%s", masked, f" (SNI {RVS_SNI})" if (use_tls and RVS_SNI) else "")
+            async with websockets.connect(url, **connect_kwargs) as ws:
                 logger.info("RVS verbunden")
                 retry_s = 2
                 tls_fallback_tried = False