Error: Failed reading DHCP socket: No child processes

[Nick Porter]

On 21/03/2026 08:48, Ľudovít Mikula via Freeradius-Users wrote:
> Hi all,
>
>   I have migrated my freeradius 3.2.3 setup to a new RHEL9 server and 
> am seeing this error message sometimes after a request is finished: 

I'd suggest using the latest 3.2.x packages - 3.2.8 - from 
https://packages.inkbridgenetworks.com/.  3.2.3 is nearly 3 years old 
now.  Depending on the reply options you're sending you may need to look 
at the head of the 3.2.x branch as there are a couple of DHCP related 
fixes which have gone in since 3.2.8 was released.

> Failed reading DHCP socket: No child processes
> Ready to process requests
>
> Any hints or clues to what might be causing it or what to 
> check/configure? 

Do you have selinux enabled?

The standard RHEL policies will block various things that FreeRADIUS 
legitimately can do.

Nick

-- 
Nick Porter

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