> Source: [sk107853](https://support.checkpoint.com/results/sk/sk107853)

# sk107853 - Traffic sent to IP addresses X.X.X.255 is dropped by ClusterXL in Load Sharing Unicast mode with "cluster error"

| Property | Value |
|----------|-------|
| Solution ID | sk107853 |
| Date Created | 2015-09-22 |
| Last Modified | 2019-11-29 |
| Technical Level | Advanced |
| Products | Security Gateway |
| Versions | R82.10, R82, R81.20 |
| OS | Gaia |

## Symptoms

- * Traffic sent to IP addresses X.X.X.255 (last octet is "255", but is not a broadcast address on this network) does not pass through ClusterXL in Load Sharing Unicast mode.

* Kernel debug ('`fw ctl debug -m fw + drop`') + SecureXL SIM debug ('`sim dbg -m pkt + cpls drop`') on non-Pivot member show:

  `
  [SIM]pivot_process_incoming: non-pivot member cannot handle broadcast/multicast, dropping packet (<Dest_IP_Address.255>)`  
  `
  [SIM]pivot_process_incoming: packet sent from pivot, passing packet`  
  `
  [SIM]sim_pkt_send_drop_notification: recieved drop, reason: ZZZ;`  
  `
  ... ... ...`  
  `
  ;fw_log_drop_conn: Packet proto=N X.X.X.X:XXX -> `*Dest_IP_Address.255*`:YYY, dropped by handle_inbound_packet, Reason: cluster error;
  `
* Disabling SecureXL on all cluster members resolves the issue.

## Cause

SecureXL always considers IP address X.X.X.255 as broadcast address. By design, non-Pivot member cannot handle non-unicast traffic. As a result, this traffic is dropped.

## Solution

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