Customer has MX960 with MX-MIC card handling of SIP traffic. MSPMAND core dump was seen.

FPC 0 PIC 2 core dumped and ams 1 went to secondary

The mspmand might crash when very high rate of SIP traffic flows through the device, specifically when SIP Register/Notify message comes with more than one VIA headers. Due to high rate of traffic, when system is unable to allocate memory to store the VIA information, the MSPMAND core dumped.

PR1870200, a duplicate of PR1819450,  fix is planned to be committed into the latest 22.4R3-S7 release.