Error: Failed reading DHCP socket: No child processes
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: (0) Finished request (0) Cleaning up request packet ID 3401348380 with timestamp +7 due to done Ready to process requests Failed reading DHCP socket: No child processes Ready to process requests 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? -- Ľudo Mikula
On Mar 21, 2026, at 9:48 PM, Ľudovít Mikula via Freeradius-Users <freeradius-users@lists.freeradius.org> wrote:
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:
(0) Finished request (0) Cleaning up request packet ID 3401348380 with timestamp +7 due to done Ready to process requests Failed reading DHCP socket: No child processes Ready to process requests 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?
That's weird. I really don't know what to say about that. Clearly that error isn't correct, but I don't know why it's being returned. It's not an error that the recvfrom() call is supposed to return. Alan DeKok.
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
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.
Thank you for the hint, but selinux is not enabled. We will try to upgrade to 3.2.8 to see whether it helps. -- Ludo
participants (3)
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Alan DeKok -
Nick Porter -
Ľudovít Mikula