> Source: [sk37441](https://support.checkpoint.com/results/sk/sk37441)

# sk37441 - Traffic sent to IP addresses X.X.X.255 is dropped by ClusterXL in Load Sharing Unicast mode with "first packet isn't SYN" log

| Property | Value |
|----------|-------|
| Solution ID | sk37441 |
| Date Created | 2009-03-05 |
| Last Modified | 2015-09-24 |
| Technical Level | Advanced |
| Products | Security Gateway |
| Versions | R82.10, R82, R81.20 |

## Symptoms

- Traffic sent to IP addresses X.X.X.255 (last octet is "255") is dropped by ClusterXL in Load Sharing Unicast mode with SmartView Tracker log "`first packet isn't SYN`"

## Solution

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