diff --git a/src/main/java/com/viaversion/aas/util/AddressParser.java b/src/main/java/com/viaversion/aas/util/AddressParser.java
index 867a4c5..51b62c2 100644
--- a/src/main/java/com/viaversion/aas/util/AddressParser.java
+++ b/src/main/java/com/viaversion/aas/util/AddressParser.java
@@ -117,7 +117,10 @@ public class AddressParser {
 		if (protocolId == null) {
 			protocol = ProtocolVersion.getClosest(arg.replace("_", "."));
 		} else {
-			protocol = ProtocolVersion.getProtocol(protocolId);
+			final ProtocolVersion ver = ProtocolVersion.getProtocol(protocolId);
+			if (ver.isKnown()) {
+				protocol = ver;
+			}
 		}
 	}
 }
diff --git a/src/main/kotlin/com/viaversion/aas/codec/packet/PacketRegistry.kt b/src/main/kotlin/com/viaversion/aas/codec/packet/PacketRegistry.kt
index 9e50157..c276765 100644
--- a/src/main/kotlin/com/viaversion/aas/codec/packet/PacketRegistry.kt
+++ b/src/main/kotlin/com/viaversion/aas/codec/packet/PacketRegistry.kt
@@ -56,21 +56,19 @@ object PacketRegistry {
         register(State.LOGIN, Direction.SERVERBOUND, ::LoginStart, Range.all(), 0)
         register(State.LOGIN, Direction.SERVERBOUND, ::CryptoResponse, Range.all(), 1)
         register(State.LOGIN, Direction.SERVERBOUND, ::PluginResponse, Range.atLeast(ProtocolVersion.v1_13), 2)
-        register(State.LOGIN, Direction.SERVERBOUND, ::PluginResponse, sharewareVersion.singleton, 2)
+//        register(State.LOGIN, Direction.SERVERBOUND, ::PluginResponse, sharewareVersion.singleton, 2)
 
         register(State.LOGIN, Direction.CLIENTBOUND, ::LoginDisconnect, Range.all(), 0)
         register(State.LOGIN, Direction.CLIENTBOUND, ::CryptoRequest, Range.all(), 1)
         register(State.LOGIN, Direction.CLIENTBOUND, ::LoginSuccess, Range.all(), 2)
         register(
             State.LOGIN, Direction.CLIENTBOUND, ::SetCompression, mapOf(
-                Range.atLeast(ProtocolVersion.v1_8) to 3,
-                sharewareVersion.singleton to 3
+                Range.atLeast(ProtocolVersion.v1_8) to 3
             )
         )
         register(
             State.LOGIN, Direction.CLIENTBOUND, ::PluginRequest, mapOf(
-                Range.atLeast(ProtocolVersion.v1_13) to 4,
-                sharewareVersion.singleton to 4
+                Range.atLeast(ProtocolVersion.v1_13) to 4
             )
         )
 
diff --git a/src/main/kotlin/com/viaversion/aas/handler/state/HandshakeState.kt b/src/main/kotlin/com/viaversion/aas/handler/state/HandshakeState.kt
index 052b8ed..14f8d70 100644
--- a/src/main/kotlin/com/viaversion/aas/handler/state/HandshakeState.kt
+++ b/src/main/kotlin/com/viaversion/aas/handler/state/HandshakeState.kt
@@ -48,7 +48,9 @@ class HandshakeState : ConnectionState {
     }
 
     private fun handleNextState(handler: MinecraftHandler, packet: Handshake) {
-        handler.data.frontVer = ProtocolVersion.getProtocol(packet.protocolId)
+        ProtocolVersion.getProtocol(packet.protocolId).apply {
+            if (this.isKnown) handler.data.frontVer = this
+        }
         when (packet.nextState.ordinal) {
             1 -> handler.data.state = StatusState()
             2 -> handler.data.state = LoginState()