On SRX1600 platforms, a DHCP-related core dump may be generated when interface ip‑0/0/0.1 flaps.

The issue has been observed running Junos OS 24.2R1‑S1.10.

On SRX1600 platforms running Junos OS 24.2R1‑S1.10, a DHCP-related core dump may be generated when the interface ip‑0/0/0.1 flaps.

In the reported case, the DHCP core dump was followed by a PFE crash; however, the two events were determined to be unrelated.

• DHCP-related core file generated
• Interface ip‑0/0/0.1 flaps prior to the event
• DHCP process restarts automatically

Trigger Conditions:

This issue may be observed under the following conditions:

• Device is SRX1600
• Interface ip‑0/0/0.1 flaps
• DHCP services are enabled

• The DHCP core dump occurs due to a null pointer dereference during DHCP processing when an interface state change is encountered.
• Under specific timing conditions during the interface flap, an internal reference is accessed before validation, leading to a DHCP process crash.
• This issue is resolved in the following Junos OS releases:
  • 23.2R2‑S7
  • 23.4R2‑S8
  • 24.2R2‑S5
  • 24.4R2‑S4
  • 25.2R2‑S1
  • 25.4R1‑S2
  • 25.4R2
  • 26.2‑DCB
• A fix has been identified to address the null pointer dereference condition.
• Customers experiencing this issue are strongly recommended to upgrade to one of the above releases or later to prevent recurrence.