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[GH-ISSUE #763] IP-Access List Not Working With `10.0.0.1/24` #648

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opened 2026-02-26 06:33:49 +03:00 by kerem · 1 comment

kerem commented

2026-02-26 06:33:49 +03:00

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Originally created by @varunsridharan on GitHub (Dec 7, 2020).
Original GitHub issue: https://github.com/NginxProxyManager/nginx-proxy-manager/issues/763

Checklist

Have you pulled and found the error with jc21/nginx-proxy-manager:latest docker image?
Are you sure you're not using someone else's docker image?
If having problems with Lets Encrypt, have you made absolutely sure your site is accessible from outside of your network?

Describe the bug
I am trying to use 10.0.0.1/24 in IP Access List because my local network is configured with that IP and I want to allow some proxy sites only from my local network

But nginx throwing some error

2020/12/07 12:51:21 [warn] 193#193: low address bits of 10.0.0.1/24 are meaningless in /data/nginx/proxy_host/4.conf:47

To Reproduce

Create an Access List With the IP 10.0.0.1/24

Expected behavior
IP Allow list should work

Screenshots

Operating System
Ubuntu

Originally created by @varunsridharan on GitHub (Dec 7, 2020). Original GitHub issue: https://github.com/NginxProxyManager/nginx-proxy-manager/issues/763 **Checklist** - [x] Have you pulled and found the error with `jc21/nginx-proxy-manager:latest` docker image? - [x] Are you sure you're not using someone else's docker image? - [x] If having problems with Lets Encrypt, have you made absolutely sure your site is accessible from outside of your network? **Describe the bug** I am trying to use `10.0.0.1/24` in **IP Access List** because my local network is configured with that IP and I want to allow some proxy sites only from my local network But nginx throwing some error ``` 2020/12/07 12:51:21 [warn] 193#193: low address bits of 10.0.0.1/24 are meaningless in /data/nginx/proxy_host/4.conf:47 ``` **To Reproduce** 1. Create an Access List With the IP `10.0.0.1/24` **Expected behavior** IP Allow list should work **Screenshots** ![Access List Base](https://s2.do-spaces.com/2020/Dec/07/160734602133.jpg) ![IP List](https://s2.do-spaces.com/2020/Dec/07/160734608913.jpg) **Operating System** Ubuntu

kerem

2026-02-26 06:33:49 +03:00

closed this issue
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kerem commented

2026-02-26 06:33:50 +03:00

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@mbenkler commented on GitHub (Dec 26, 2020):

your subnet is 10.0.0.0/24 and not 10.0.0.1/24 if yout configure your subnet right in the access list it will work.

There's no such network as 10.0.0.1/24, because it doesn't start on a legitimate boundary between /24 network ranges. The last bit of the address is set, but is meaningless in this context. The correct address would be 10.0.0.0/24, which means the range from 10.0.0.0 to 10.0.0.255

@mbenkler commented on GitHub (Dec 26, 2020): your subnet is **10.0.0.0/24** and not 10.0.0.1/24 if yout configure your subnet right in the access list it will work. There's no such network as 10.0.0.1/24, because it doesn't start on a legitimate boundary between /24 network ranges. The last bit of the address is set, but is meaningless in this context. The correct address would be 10.0.0.0/24, which means the range from 10.0.0.0 to 10.0.0.255

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[GH-ISSUE #763] IP-Access List Not Working With 10.0.0.1/24 #648

[GH-ISSUE #763] IP-Access List Not Working With `10.0.0.1/24` #648