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4642ef5a18
When the MME receives an E-RAB Setup Response with failure for the default bearer, the PDN session remains in MME/SGWC context even though it was never activated. As a result, when the UE retries PDN Connectivity Request for the same APN, the MME prints "APN duplicated [ims]" and rejects the request. This patch fixes the issue by sending a Delete Session Request toward SGWC when the default E-RAB setup fails. The failed PDN session is then removed, allowing the UE to reattempt PDN connectivity for the same APN. Added a new regression test (test_issues4141_func) that reproduces the scenario: - First PDN Connectivity Request for IMS fails (E-RAB setup failure) - MME sends Delete Session Request - Second PDN Connectivity Request for IMS succeeds normally Issue: #4141 |
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| core | ||
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| fuzzing | ||
| handover | ||
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| registration | ||
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