Velocity LimboHub as a fallback server

Hello, can you help me please?

I wanna use the LimboHub as a fallback server (try) server, but I can't config it.

Situation:
I can try connect to parkour server from LimboHub lobby, but my server under maintenance and can't connect it.

Problem:
Always kicking the player from the HUB / Velocity server, can't connect automatically for LimboHub.

---

_First try:_
Result message: Unable to connect you to parkour. Please try again later.

Velocity config:
```
[servers]
parkour = "x.x.x.x:25565"
hub = "127.0.0.1:25565"

try = []
```

Logs:
```
proxy-main_1 | [17:04:42 INFO] [geyser]: /W.X.Y.Z:38814 tried to connect!
proxy-main_1 | [17:04:43 INFO] [geyser]: Player connected with username userfoobar
proxy-main_1 | [17:04:44 INFO] [geyser]: userfoobar (logged in as: userfoobar) has connected to the Java server
proxy-main_1 | [17:04:44 INFO] [floodgate]: Floodgate player who is logged in as userfoobar 00000000-0000-0000-0000-00000000 joined
proxy-main_1 | [17:04:46 INFO] [limboapi]: userfoobar (/W.X.Y.Z:0) has connected to the LimboHub Limbo
proxy-main_1 | [17:05:06 INFO] [limboapi]: userfoobar (/W.X.Y.Z:0) has disconnected from the LimboHub Limbo
proxy-main_1 | [17:05:07 ERROR]: [connected player] userfoobar (/W.X.Y.Z:0): unable to connect to server parkour
proxy-main_1 | java.net.UnknownHostException: server-parkour: Name or service not known
[...]
proxy-main_1 | [17:05:07 INFO]: [connected player] userfoobar (/W.X.Y.Z:0) has disconnected: Unable to connect you to parkour. Please try again later.
proxy-main_1 | [17:05:07 INFO] [floodgate]: Floodgate player logged in as userfoobar disconnected
proxy-main_1 | [17:05:07 INFO] [geyser]: userfoobar has disconnected from the Java server because of Unable to connect you to parkour. Please try again later.
```

---

_Second try:_
Result message: You are already connected to this proxy!

Velocity config:
```
[servers]
parkour = "x.x.x.x:25565"
hub = "127.0.0.1:25565"

try = ["hub"]
```

```
proxy-main_1 | [17:10:12 INFO] [geyser]: /W.X.Y.Z:38814 tried to connect!
proxy-main_1 | [17:10:14 INFO] [geyser]: Player connected with username userfoobar
proxy-main_1 | [17:10:14 INFO] [geyser]: userfoobar (logged in as: userfoobar) has connected to the Java server
proxy-main_1 | [17:10:14 INFO] [floodgate]: Floodgate player who is logged in as userfoobar 00000000-0000-0000-0000-00000000 joined
proxy-main_1 | [17:10:16 INFO] [limboapi]: userfoobar (/W.X.Y.Z:0) has connected to the LimboHub Limbo
proxy-main_1 | [17:10:33 INFO] [limboapi]: userfoobar (/W.X.Y.Z:0) has disconnected from the LimboHub Limbo
proxy-main_1 | [17:10:33 ERROR]: [connected player] userfoobar (/W.X.Y.Z:0): unable to connect to server parkour
[...]
proxy-main_1 | [17:10:33 INFO]: [server connection] userfoobar -> hub has connected
proxy-main_1 | [17:10:33 INFO]: [connected player] userfoobar (/127.0.0.1:46992) has disconnected: You are already connected to this proxy!
proxy-main_1 | [17:10:33 INFO]: [server connection] userfoobar -> hub has disconnected
proxy-main_1 | [17:10:33 ERROR]: [connected player] userfoobar (/W.X.Y.Z:0): disconnected while connecting to hub: You are already connected to this proxy!
proxy-main_1 | [17:10:33 INFO]: [connected player] userfoobar (/W.X.Y.Z:0) has disconnected: Unable to connect to hub: You are already connected to this proxy!
proxy-main_1 | [17:10:33 INFO] [floodgate]: Floodgate player logged in as userfoobar disconnected
proxy-main_1 | [17:10:33 INFO] [geyser]: userfoobar has disconnected from the Java server because of Unable to connect to hub: You are already connected to this proxy!
```

Thank you!

Start by reproducing the failed parkour connection with the two shown Velocity [servers] configurations and compare the LimboHub and Velocity disconnect logs. Trace the fallback connection path from the reported LimboHub disconnect through Velocity's server connection handling; done means a maintenance-time failure returns the player to the configured hub without disconnecting them.

Written by the indexing model from the issue text.