# [LIBSOCK_ILLEGAL_LIBMODE](https://apps.juniper.net/syslog-explorer/?msg=LIBSOCK_ILLEGAL_LIBMODE)

## SYSLOG Details
- **Message**: <variable>function-name</variable>: Task <variable>task-name</variable>: Illegal lib_mode :<variable>message-type-num</variable>
- **Help**: Illegal lib mode
- **Description**: Libsock mode should be either of tcp_sock_blocking or rtsock
- **Type**: Internal: Internal log message
- **Severity**: error
- **Cause**: -
- **Action**: -
- **Attributes**: function-name
task-name
message-type-num
- **Facility**: LOG_DAEMON

## Found this message in the following releases:
- [Junos OS 24.2R1](https://apps.juniper.net/syslog-explorer/?msg=LIBSOCK_ILLEGAL_LIBMODE&sw=Junos%20OS&rel=24.2R1)
- [Junos OS 23.4R1](https://apps.juniper.net/syslog-explorer/?msg=LIBSOCK_ILLEGAL_LIBMODE&sw=Junos%20OS&rel=23.4R1)