BugZero | F5 BugID 850873 - LTM global SNAT sets TTL to 255 on egress.

F5 - Defect ID: 850873

LTM global SNAT sets TTL to 255 on egress.

F5 - Defect ID: 850873

LTM global SNAT sets TTL to 255 on egress.

Last updated on July 18th, 2026

BugZero Risk Score
8.6 High

Overall: 8.6

Severity: 9.1

Community: 4.2

Lifecycle: 8.3

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Bug Details

Priority: 2-Critical
Status: Verified
Impact Category: Local Traffic Manager
Views: 1

Description

Symptoms

When using the global SNAT feature on LTM, IPv4 TTL/IPv6 Hop-Limit values may be erroneously set to 255/64 on egress.

Impact

TTL on egress is set to 255/; Hop-Limit on egress is set to 64.

Conditions

Traffic is handled by global SNAT.

Workaround

None.

Fix Information

None

Change history

Links

Original Vendor Announcement

Relevant Products

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Affected versions:14.1.0, 14.1.0.1, 14.1.0.2, 14.1.0.3, 14.1.0.5, 14.1.0.6, 14.1.2, 14.1.2.1, 14.1.2.2, 14.1.2.3, 14.1.2.4, 14.1.2.5, 14.1.2.6, 14.1.2.7, 14.1.2.8, 14.1.3, 15.0.0, 15.0.1, 15.0.1.1, 15.0.1.2, 15.0.1.3, 15.0.1.4, 15.1.0, 15.1.0.1, 15.1.0.2, 15.1.0.3, 15.1.0.4, 15.1.0.5, 15.1.1

Fixed versions: 16.0.0, 15.1.2, 14.1.3.1

Relevant Products

Click on a version to see all relevant bugs

Fixed versions: 16.0.0, 15.1.2, 14.1.3.1

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F5 - Defect ID: 850873

LTM global SNAT sets TTL to 255 on egress.

F5 - Defect ID: 850873

LTM global SNAT sets TTL to 255 on egress.

Last updated on July 18th, 2026

BugZero Risk Score8.6 High

Bug Details

Symptoms

Impact

Conditions

Workaround

Fix Information

Links

Top F5 Defects

Ready to prevent the next vendor outage?

F5 - Defect ID: 850873

LTM global SNAT sets TTL to 255 on egress.

F5 - Defect ID: 850873

LTM global SNAT sets TTL to 255 on egress.

Last updated on July 18th, 2026

BugZero Risk Score8.6 High

Bug Details

Symptoms

Impact

Conditions

Workaround

Fix Information

Links

Top F5 Defects

Ready to prevent the next vendor outage?

BugZero Risk Score
8.6 High

BugZero Risk Score
8.6 High