BugZero | Cisco BugID CSCvs40230 - ICMP not working and failed with inspect-icmp-seq-...

Loading...

Operational Defect Database

A free repository of operational (non-security) bugs centralized through custom integrations with leading IT vendors.

Product

Enterprise platform
Bug Scrub Advisor
Operational Risk Scoring
Vendor Integrations

Company

Plans
Value Guide
About
Contact us
Legal

Resources

Blog
ServiceNow App
Trust Center
Risk Management
NIST
DORA

Operational Defect Database

A free repository of operational (non-security) bugs centralized through custom integrations with leading IT vendors.

Product

Enterprise platform
Bug Scrub Advisor
Operational Risk Scoring
Vendor Integrations

Company

Plans
Value Guide
About
Contact us
Legal

Resources

Blog
ServiceNow App
Trust Center
Risk Management
NIST
DORA

©2025 BugZero. All Rights Reserved.

Privacy Policy Terms of Service

BugZero | Cisco BugID CSCvs40230 - ICMP not working and failed with inspect-icmp-seq-...

ODD
Cisco
CSCvs40230

Cisco - Defect ID: CSCvs40230

ICMP not working and failed with inspect-icmp-seq-num-not-matched

ODD
Cisco
CSCvs40230

Cisco - Defect ID: CSCvs40230

ICMP not working and failed with inspect-icmp-seq-num-not-matched

Last updated on August 21st, 2025

BugZero Risk Score
6.1 Medium

Overall: 6.1

Severity: 6.4

Lifecycle: 9.1

Popularity: 5.1

What is the BugZero Risk Score?

Cisco Integration

Learn more about where this data comes from

Cisco Integration

Bug Scrub Advisor

Streamline upgrades with automated vendor bug scrubs

Bug Scrub Advisor

BugZero Enterprise

Wish you caught this bug sooner? Get proactive today.

BugZero Enterprise

Bug Details

Views: 13

Description

Symptom

ICMP traffic is droped for the reason: ICMP Inspect seq num not matched Actual host ip is dynamic natted when it goes out. Our main concern is ping going via OUTSIDE_test interface . nat (INSIDE,OUTSIDE_test) source dynamic any interface PBR applied on inside interface to route the traffic to OUTSIDE interface. access-lists applied on inside and OUTSIDE_test interfaces and icmp traffic is allowed in it in both directions.

Conditions

Workaround

disable icmp inspection and create access list for both direction

Further Problem Description

Change history

2025-08-21 Added: 9.10.1, 9.10.1.10, 9.10.1.11, 9.10.1.17, 9.10.1.2, 9.10.1.22, 9.10.1.27, 9.10.1.30, 9.10.1.32, 9.10.1.37, 9.10.1.40, 9.10.1.42, 9.10.1.44, 9.10.1.7, 9.12.1, 9.12.1.2, 9.12.1.3, 9.12.2, 9.12.2.1, 9.12.2.4, 9.12.2.5, 9.12.2.9, 9.12.3, 9.12.3.2, 9.12.3.7, 9.13.1, 9.13.1.2, 9.8.2.33, 9.8.2.35, 9.8.2.38, 9.8.2.45, 9.8.3, 9.8.3.11, 9.8.3.14, 9.8.3.16, 9.8.3.18, 9.8.3.21, 9.8.3.26, 9.8.3.29, 9.8.3.8, 9.8.4, 9.8.4.10, 9.8.4.12, 9.8.4.15, 9.8.4.17, 9.8.4.20, 9.8.4.22, 9.8.4.25, 9.8.4.26, 9.8.4.29, 9.8.4.3, 9.8.4.32, 9.8.4.33, 9.8.4.34, 9.8.4.35, 9.8.4.39, 9.8.4.40, 9.8.4.41, 9.8.4.43, 9.8.4.44, 9.8.4.45, 9.8.4.46, 9.8.4.48, 9.8.4.7, 9.8.4.8, 9.9.2.14, 9.9.2.18, 9.9.2.25, 9.9.2.27, 9.9.2.32, 9.9.2.36, 9.9.2.40, 9.9.2.47, 9.9.2.50, 9.9.2.52, 9.9.2.56, 9.9.2.59, 9.9.2.61, 9.9.2.66, 9.9.2.67, 9.9.2.74, 9.9.2.80, 9.9.2.83, 9.9.2.85, 9.9.2.9

Relevant Products

Click on a version to see all relevant bugs

Affected versions:9.10.1, 9.10.1.10, 9.10.1.11, 9.10.1.17, 9.10.1.2, 9.10.1.22, 9.10.1.27, 9.10.1.30, 9.10.1.32, 9.10.1.37, 9.10.1.40, 9.10.1.42, 9.10.1.44, 9.10.1.7, 9.12.1, 9.12.1.2, 9.12.1.3, 9.12.2, 9.12.2.1, 9.12.2.4, 9.12.2.5, 9.12.2.9, 9.12.3, 9.12.3.2, 9.12.3.7, 9.13.1, 9.13.1.2, 9.8.2.33, 9.8.2.35, 9.8.2.38, 9.8.2.45, 9.8.3, 9.8.3.11, 9.8.3.14, 9.8.3.16, 9.8.3.18, 9.8.3.21, 9.8.3.26, 9.8.3.29, 9.8.3.8, 9.8.4, 9.8.4.10, 9.8.4.12, 9.8.4.15, 9.8.4.17, 9.8.4.20, 9.8.4.22, 9.8.4.25, 9.8.4.26, 9.8.4.29, 9.8.4.3, 9.8.4.32, 9.8.4.33, 9.8.4.34, 9.8.4.35, 9.8.4.39, 9.8.4.40, 9.8.4.41, 9.8.4.43, 9.8.4.44, 9.8.4.45, 9.8.4.46, 9.8.4.48, 9.8.4.7, 9.8.4.8, 9.9.2.14, 9.9.2.18, 9.9.2.25, 9.9.2.27, 9.9.2.32, 9.9.2.36, 9.9.2.40, 9.9.2.47, 9.9.2.50, 9.9.2.52, 9.9.2.56, 9.9.2.59, 9.9.2.61, 9.9.2.66, 9.9.2.67, 9.9.2.74, 9.9.2.80, 9.9.2.83, 9.9.2.85, 9.9.2.9

Fixed versions: 9.12.3.12, 9.12.3.9, 9.12.4, 9.12.4.10, 9.12.4.13, 9.12.4.18, 9.12.4.2, 9.12.4.24, 9.12.4.26, 9.12.4.29, 9.12.4.30, 9.12.4.35, 9.12.4.37, 9.12.4.38, 9.12.4.39, 9.12.4.4, 9.12.4.40, 9.12.4.41, 9.12.4.47, 9.12.4.48, 9.12.4.50, 9.12.4.52, 9.12.4.54, 9.12.4.55, 9.12.4.56, 9.12.4.58, 9.12.4.62, 9.12.4.65, 9.12.4.67, 9.12.4.7, 9.12.4.8, 9.13.1.10, 9.13.1.12, 9.13.1.13, 9.13.1.16, 9.13.1.19, 9.13.1.21, 9.13.1.7, 9.14.1, 9.14.1.10, 9.14.1.15, 9.14.1.19, 9.14.1.30, 9.14.1.6, 9.14.2, 9.14.2.13, 9.14.2.15, 9.14.2.4, 9.14.2.8, 9.14.3, 9.14.3.1, 9.14.3.11, 9.14.3.13, 9.14.3.15, 9.14.3.18, 9.14.3.9, 9.14.4, 9.14.4.12, 9.14.4.13, 9.14.4.14, 9.14.4.15, 9.14.4.17, 9.14.4.22, 9.14.4.23, 9.14.4.24, 9.14.4.6, 9.14.4.7, 9.15.1, 9.15.1.1, 9.15.1.10, 9.15.1.15, 9.15.1.16, 9.15.1.17, 9.15.1.21, 9.15.1.7, 9.16.1, 9.16.1.28, 9.16.2, 9.16.2.11, 9.16.2.13, 9.16.2.14, 9.16.2.3, 9.16.2.7, 9.16.3, 9.16.3.14, 9.16.3.15, 9.16.3.19, 9.16.3.23, 9.16.3.3, 9.16.4, 9.16.4.14, 9.16.4.18, 9.16.4.19, 9.16.4.27, 9.16.4.38, 9.16.4.39, 9.16.4.42, 9.16.4.48, 9.16.4.55, 9.16.4.57, 9.16.4.61, 9.16.4.62, 9.16.4.67, 9.16.4.70, 9.16.4.71, 9.16.4.76, 9.16.4.82, 9.16.4.84, 9.16.4.9, 9.17.1, 9.17.1.10, 9.17.1.11, 9.17.1.13, 9.17.1.15, 9.17.1.20, 9.17.1.30, 9.17.1.33, 9.17.1.39, 9.17.1.45, 9.17.1.46, 9.17.1.7, 9.17.1.9, 9.18.1, 9.18.1.3, 9.18.2, 9.18.2.5, 9.18.2.7, 9.18.2.8, 9.18.3, 9.18.3.39, 9.18.3.46, 9.18.3.53, 9.18.3.55, 9.18.3.56, 9.18.4, 9.18.4.22, 9.18.4.24, 9.18.4.29, 9.18.4.34, 9.18.4.40, 9.18.4.47, 9.18.4.5, 9.18.4.50, 9.18.4.52, 9.18.4.53, 9.18.4.57, 9.18.4.8, 9.19.1, 9.19.1.12, 9.19.1.18, 9.19.1.22, 9.19.1.24, 9.19.1.27, 9.19.1.28, 9.19.1.31, 9.19.1.37, 9.19.1.38, 9.19.1.42, 9.19.1.5, 9.19.1.9, 9.20.1, 9.20.1.5, 9.20.2, 9.20.2.10, 9.20.2.21, 9.20.2.22, 9.20.3, 9.20.3.10, 9.20.3.13, 9.20.3.16, 9.20.3.20, 9.20.3.4, 9.20.3.7, 9.20.3.9, 9.22.1.1, 9.22.1.2, 9.22.1.3, 9.22.1.6, 9.22.2, 9.23.1, 9.23.1.3, 9.8.1, 9.8.1.5, 9.8.1.7, 9.8.2, 9.8.2.14, 9.8.2.15, 9.8.2.17, 9.8.2.20, 9.8.2.24, 9.8.2.26, 9.8.2.28, 9.8.2.8, 9.9.1, 9.9.1.2, 9.9.1.3, 9.9.1.4, 9.9.1.5, 9.9.2, 9.9.2.1, 9.9.2.235

Relevant Products

Click on a version to see all relevant bugs

Affected versions:9.10.1, 9.10.1.10, 9.10.1.11, 9.10.1.17, 9.10.1.2, 9.10.1.22, 9.10.1.27, 9.10.1.30, 9.10.1.32, 9.10.1.37, 9.10.1.40, 9.10.1.42, 9.10.1.44, 9.10.1.7, 9.12.1, 9.12.1.2, 9.12.1.3, 9.12.2, 9.12.2.1, 9.12.2.4, 9.12.2.5, 9.12.2.9, 9.12.3, 9.12.3.2, 9.12.3.7, 9.13.1, 9.13.1.2, 9.8.2.33, 9.8.2.35, 9.8.2.38, 9.8.2.45, 9.8.3, 9.8.3.11, 9.8.3.14, 9.8.3.16, 9.8.3.18, 9.8.3.21, 9.8.3.26, 9.8.3.29, 9.8.3.8, 9.8.4, 9.8.4.10, 9.8.4.12, 9.8.4.15, 9.8.4.17, 9.8.4.20, 9.8.4.22, 9.8.4.25, 9.8.4.26, 9.8.4.29, 9.8.4.3, 9.8.4.32, 9.8.4.33, 9.8.4.34, 9.8.4.35, 9.8.4.39, 9.8.4.40, 9.8.4.41, 9.8.4.43, 9.8.4.44, 9.8.4.45, 9.8.4.46, 9.8.4.48, 9.8.4.7, 9.8.4.8, 9.9.2.14, 9.9.2.18, 9.9.2.25, 9.9.2.27, 9.9.2.32, 9.9.2.36, 9.9.2.40, 9.9.2.47, 9.9.2.50, 9.9.2.52, 9.9.2.56, 9.9.2.59, 9.9.2.61, 9.9.2.66, 9.9.2.67, 9.9.2.74, 9.9.2.80, 9.9.2.83, 9.9.2.85, 9.9.2.9

Fixed versions: 9.12.3.12, 9.12.3.9, 9.12.4, 9.12.4.10, 9.12.4.13, 9.12.4.18, 9.12.4.2, 9.12.4.24, 9.12.4.26, 9.12.4.29, 9.12.4.30, 9.12.4.35, 9.12.4.37, 9.12.4.38, 9.12.4.39, 9.12.4.4, 9.12.4.40, 9.12.4.41, 9.12.4.47, 9.12.4.48, 9.12.4.50, 9.12.4.52, 9.12.4.54, 9.12.4.55, 9.12.4.56, 9.12.4.58, 9.12.4.62, 9.12.4.65, 9.12.4.67, 9.12.4.7, 9.12.4.8, 9.13.1.10, 9.13.1.12, 9.13.1.13, 9.13.1.16, 9.13.1.19, 9.13.1.21, 9.13.1.7, 9.14.1, 9.14.1.10, 9.14.1.15, 9.14.1.19, 9.14.1.30, 9.14.1.6, 9.14.2, 9.14.2.13, 9.14.2.15, 9.14.2.4, 9.14.2.8, 9.14.3, 9.14.3.1, 9.14.3.11, 9.14.3.13, 9.14.3.15, 9.14.3.18, 9.14.3.9, 9.14.4, 9.14.4.12, 9.14.4.13, 9.14.4.14, 9.14.4.15, 9.14.4.17, 9.14.4.22, 9.14.4.23, 9.14.4.24, 9.14.4.6, 9.14.4.7, 9.15.1, 9.15.1.1, 9.15.1.10, 9.15.1.15, 9.15.1.16, 9.15.1.17, 9.15.1.21, 9.15.1.7, 9.16.1, 9.16.1.28, 9.16.2, 9.16.2.11, 9.16.2.13, 9.16.2.14, 9.16.2.3, 9.16.2.7, 9.16.3, 9.16.3.14, 9.16.3.15, 9.16.3.19, 9.16.3.23, 9.16.3.3, 9.16.4, 9.16.4.14, 9.16.4.18, 9.16.4.19, 9.16.4.27, 9.16.4.38, 9.16.4.39, 9.16.4.42, 9.16.4.48, 9.16.4.55, 9.16.4.57, 9.16.4.61, 9.16.4.62, 9.16.4.67, 9.16.4.70, 9.16.4.71, 9.16.4.76, 9.16.4.82, 9.16.4.84, 9.16.4.9, 9.17.1, 9.17.1.10, 9.17.1.11, 9.17.1.13, 9.17.1.15, 9.17.1.20, 9.17.1.30, 9.17.1.33, 9.17.1.39, 9.17.1.45, 9.17.1.46, 9.17.1.7, 9.17.1.9, 9.18.1, 9.18.1.3, 9.18.2, 9.18.2.5, 9.18.2.7, 9.18.2.8, 9.18.3, 9.18.3.39, 9.18.3.46, 9.18.3.53, 9.18.3.55, 9.18.3.56, 9.18.4, 9.18.4.22, 9.18.4.24, 9.18.4.29, 9.18.4.34, 9.18.4.40, 9.18.4.47, 9.18.4.5, 9.18.4.50, 9.18.4.52, 9.18.4.53, 9.18.4.57, 9.18.4.8, 9.19.1, 9.19.1.12, 9.19.1.18, 9.19.1.22, 9.19.1.24, 9.19.1.27, 9.19.1.28, 9.19.1.31, 9.19.1.37, 9.19.1.38, 9.19.1.42, 9.19.1.5, 9.19.1.9, 9.20.1, 9.20.1.5, 9.20.2, 9.20.2.10, 9.20.2.21, 9.20.2.22, 9.20.3, 9.20.3.10, 9.20.3.13, 9.20.3.16, 9.20.3.20, 9.20.3.4, 9.20.3.7, 9.20.3.9, 9.22.1.1, 9.22.1.2, 9.22.1.3, 9.22.1.6, 9.22.2, 9.23.1, 9.23.1.3, 9.8.1, 9.8.1.5, 9.8.1.7, 9.8.2, 9.8.2.14, 9.8.2.15, 9.8.2.17, 9.8.2.20, 9.8.2.24, 9.8.2.26, 9.8.2.28, 9.8.2.8, 9.9.1, 9.9.1.2, 9.9.1.3, 9.9.1.4, 9.9.1.5, 9.9.2, 9.9.2.1, 9.9.2.235

Top Cisco Defects

No bugs this month

Ready to prevent the next vendor outage?

Links

Original Vendor Announcement

Cisco Integration

Learn more about where this data comes from

Cisco Integration

Bug Scrub Advisor

Streamline upgrades with automated vendor bug scrubs

Bug Scrub Advisor

BugZero Enterprise

Wish you caught this bug sooner? Get proactive today.

BugZero Enterprise