srsUE freezes after successful attach when using srsEPC + srsENB (external UE device)

[JZz2z]

Description

srsUE freezes after a successful attach. The UE attaches correctly to the network,
but shortly after attach completion the srsUE process hangs and stops responding.

Environment

• srsRAN version: release_23_04_1 / release_23_11
• OS: Ubuntu 24.04
• UHD 4.1.0.0-0-45cabfde
• eNB: srsENB (same machine)

Reproduction steps

1. Start srsEPC
2. Start srsENB
3. Start srsUE on another device
4. UE attaches successfully
5. UE process freezes after attach

ue.log