[GH-ISSUE #4646] [Feature Request] Real User IP for UDP Protocol

gitea-mirror commented

2026-05-05 14:21:18 -06:00

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Originally created by @xZinio on GitHub (Jan 21, 2025).
Original GitHub issue: https://github.com/fatedier/frp/issues/4646

Describe the feature request

Hi, as the name implies I would really like if FRP could forward the real IP addresses of incoming connections via the UDP protocol. This is because I expose a TeamSpeak (which uses UDP) server through FRP and right now the connection details window of a user always just displays 127.0.0.1. This would be amazing to have ;)

Describe alternatives you've considered

I don't think there are any. If there are I would LOVE to know, right now I have no way to look at my TeamSpeak Users' IP addresses.

Affected area

Docs
Installation
Performance and Scalability
Security
User Experience
Test and Release
Developer Infrastructure
Client Plugin
Server Plugin
Extensions
Others

Originally created by @xZinio on GitHub (Jan 21, 2025). Original GitHub issue: https://github.com/fatedier/frp/issues/4646 ### Describe the feature request Hi, as the name implies I would really like if FRP could forward the real IP addresses of incoming connections via the UDP protocol. This is because I expose a TeamSpeak (which uses UDP) server through FRP and right now the connection details window of a user always just displays `127.0.0.1`. This would be amazing to have ;) ### Describe alternatives you've considered I don't think there are any. If there are I would LOVE to know, right now I have no way to look at my TeamSpeak Users' IP addresses. ### Affected area - [ ] Docs - [ ] Installation - [x] Performance and Scalability - [x] Security - [ ] User Experience - [ ] Test and Release - [ ] Developer Infrastructure - [x] Client Plugin - [x] Server Plugin - [ ] Extensions - [ ] Others

gitea-mirror

2026-05-05 14:21:18 -06:00

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gitea-mirror commented

2026-05-05 14:21:22 -06:00

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@github-actions[bot] commented on GitHub (Feb 5, 2025):

Issues go stale after 14d of inactivity. Stale issues rot after an additional 3d of inactivity and eventually close.

@github-actions[bot] commented on GitHub (Feb 5, 2025): Issues go stale after 14d of inactivity. Stale issues rot after an additional 3d of inactivity and eventually close.

gitea-mirror commented

2026-05-05 14:21:23 -06:00

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@fatedier commented on GitHub (Feb 7, 2025):

Do you mean supporting proxy protocol for UDP?

@fatedier commented on GitHub (Feb 7, 2025): Do you mean supporting proxy protocol for UDP?

gitea-mirror commented

2026-05-05 14:21:24 -06:00

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@xZinio commented on GitHub (Feb 7, 2025):

Yes

@xZinio commented on GitHub (Feb 7, 2025): Yes

gitea-mirror commented

2026-05-05 14:21:24 -06:00

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@vnghia commented on GitHub (May 10, 2025):

Hi FYI proxy protocol v2 is supported for udp according to this.

@vnghia commented on GitHub (May 10, 2025): Hi FYI proxy protocol v2 is supported for udp according to [this](https://developers.cloudflare.com/spectrum/how-to/enable-proxy-protocol/).

gitea-mirror commented

2026-05-05 14:21:26 -06:00

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@cobbdzon commented on GitHub (May 16, 2025):

Hi FYI proxy protocol v2 is supported for udp according to this.

I thought I was doing something wrong in my setup but I recently found out the frp does not support Proxy Protocol for UDP despite frp supporting Proxy Protocol V2 (which supports TCP/UDP, unlike V1 which only supports TCP)

Is there any reason for frp not supporting it right now?

@cobbdzon commented on GitHub (May 16, 2025): > Hi FYI proxy protocol v2 is supported for udp according to [this](https://developers.cloudflare.com/spectrum/how-to/enable-proxy-protocol/). I thought I was doing something wrong in my setup but I recently found out the frp does not support Proxy Protocol for UDP despite frp supporting Proxy Protocol V2 (which supports TCP/UDP, unlike V1 which only supports TCP) Is there any reason for frp not supporting it right now?

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2026-05-05 14:49:06 -06:00

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2026-05-05 14:49:51 -06:00

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