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pr cp 129218 r2

IBM AIX 7.1 – Common Problem 175 – Diagnosis and Fix

🟠 High   ⏱ 5–30 min  Last verified: 20 May 2026 Affected versions: IBM AIX 7.1 πŸ“– ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors […]

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pr cp 118615 r2

Ubuntu 16.04 LTS – snapd cannot reach the Snap store

🟑 Medium   ⏱ 5–30 min  Last verified: 20 May 2026 Affected versions: Ubuntu 16.04 LTS Ubuntu 16.04 Ubuntu 16.04.7 πŸ“– ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention […]

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pr cp 123654 r2

FreeBSD 12 – resolv.conf gets overwritten by dhclient and breaks internal DNS

🟑 Medium   ⏱ 5–30 min  Last verified: 20 May 2026 Affected versions: FreeBSD 12 πŸ“– ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & […]

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pr cp 122160 r2

FreeBSD 15 – resolv.conf gets overwritten by dhclient and breaks internal DNS

🟑 Medium   ⏱ 5–30 min  Last verified: 20 May 2026 Affected versions: FreeBSD 15 πŸ“– ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & […]

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pr cp 122658 r2

FreeBSD 14 – resolv.conf gets overwritten by dhclient and breaks internal DNS

🟑 Medium   ⏱ 5–30 min  Last verified: 20 May 2026 Affected versions: FreeBSD 14 πŸ“– ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & […]

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pr cp 123159 r2

FreeBSD 13 – resolv.conf gets overwritten by dhclient and breaks internal DNS

🟑 Medium   ⏱ 5–30 min  Last verified: 20 May 2026 Affected versions: FreeBSD 13 πŸ“– ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & […]

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pr cp 111799 r2

Windows Server 2022 β€” Firewall Rules Present but Inbound Application Traffic Still Blocked β€” Fix & Prevention

🟑 Medium   ⏱ 5–30 min  Last verified: 18 May 2026 Affected versions: Windows Server 2022 πŸ“– ~1 min read Table of contents Symptom & Impact Quick Checks Deep Diagnosis Primary Fix Verification Prevention & Hardening Symptom & Impact Applications remain unreachable despite visible allow rules in Windows Defender Firewall. Teams assume network outage while […]

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pr cp 116463 r2

Ubuntu 24.04 LTS – systemd-resolved returns intermittent DNS failures

🟠 High   ⏱ 5–30 min  Last verified: 19 May 2026 Affected versions: Ubuntu 24.04 LTS Ubuntu 24.04 Ubuntu 24.04.1 πŸ“– ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention […]

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pr cp 115949 r2

Ubuntu 26.04 LTS – systemd-resolved returns SERVFAIL for internal DNS zones

🟠 High   ⏱ 5–30 min  Last verified: 19 May 2026 Affected versions: Ubuntu 26.04 LTS Ubuntu 26.04 Ubuntu 26.04.1 πŸ“– ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention […]

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pr cp 111662 r2

Windows Server 2022 β€” GRE tunnel stays up but no payload passes β€” Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 19 May 2026 Affected versions: Windows Server 2022 πŸ“– ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution β€” Primary Fix Solution β€” Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors […]

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