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

## SYSLOG Details
- **Message**: failed to lock ifstate trace chain (<variable>error-message</variable>)
- **Help**: falied to set ifstate trace chain read pointer
- **Description**: The ifstrace process (ifstraced) could not successfully set the ifstate trade read mode on the opened routing socket, for the indicated reason.
- **Type**: SNO: Should Not Occur
- **Severity**: emergency
- **Cause**: -
- **Action**: -
- **Attributes**: error-message
- **Facility**: ANY

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