3522866 - DB6: High Availability Disaster Recovery (HADR) Errors "generic HADR error code"

The error messages in the db2diag.log files include "generic HADR error code", "recv failed with errno = 73", "Error sending data: errno = 32", and "Communication with HADR partner was lost".

2024-09-20-10.18.49.434224+330 I164325537A517       LEVEL: Error
PID     : 50790766             TID : 85076          PROC : db2sysc 0
INSTANCE: db2pec               NODE : 000           DB   : PEC     
HOSTNAME: bamecpdb
EDUID   : 85076                EDUNAME: db2hadrp.0.1 (PEC) 0
FUNCTION: DB2 UDB, High Availability Disaster Recovery, hdrSendBuffer, probe:20000
MESSAGE : ZRC=0x8780013D=-2021654211=HDR_ZRC_GENERIC_ERROR
          "generic HADR error code"
DATA #1 : <preformatted>
Error sending data: errno = 32.

IBM DB2 for LUW

DB2, High Availability Disaster Recovery, HADR, errno = 73, errno = 32, communication lost, port, ZRC=0x8780013D=-2021654211=HDR_ZRC_GENERIC_ERROR, CP/IP send error. Closing HADR connection.  , KBA , BC-DB-DB6 , DB2 Universal Database for Unix / NT , Problem