[backport] #1312: [fix] Invalidate Config checksum after subnet provisioning (to 1.2)#1321
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Bug: Previously, the `post_provision_handler` in BaseSubnetDivisionRuleType did not update the associated Config checksum after subnets or IP addresses were provisioned. This could lead to inconsistent state where the Config's checksum and checksum_db diverged, especially when VPN templates were switched or updated, causing change detection and dependent logic to fail. Fix: - Converted `post_provision_handler` to a classmethod so subclasses can extend it safely. - Invalidate the backend instance cache for the Config. - Update `checksum_db` if the current checksum differs. - In VPNSubnetDivisionRuleType, call the superclass handler to ensure checksum and cache are updated automatically when a VPN template is provisioned. [backport 1.2] (cherry picked from commit 76e1527)
nemesifier
approved these changes
Mar 27, 2026
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Backport of #1312 to
1.2.