fix(gre): сохранять и восстанавливать статические IPv6 адреса

backend/package.json

@@ -24,7 +24,7 @@
     "test:users": "tsx src/modules/users/iface-type.test.ts && tsx src/modules/users/bindings.test.ts && tsx src/modules/users/interface-inventory.test.ts && tsx src/routes/users-catalog.test.ts",
     "test:pg": "tsx src/db/sql-bind.test.ts && tsx src/db/sqlite-json.test.ts && tsx src/db/traffic-flags.test.ts && tsx src/db/pg-schema.test.ts && tsx src/services/config-revisions.test.ts",
     "test:recursive-routes": "tsx src/routes/recursive-routes.test.ts && tsx src/services/recursive-route-catalog.test.ts && tsx src/services/recursive-apply.test.ts",
-    "test:config-sync": "tsx src/services/config-apply-plan.test.ts && tsx src/services/entity-snapshots.test.ts",
+    "test:config-sync": "tsx src/services/config-apply-plan.test.ts && tsx src/services/entity-snapshots.test.ts && tsx src/services/gre-ipv6.test.ts && tsx src/routes/gre-ipv6-validation.test.ts",
     "test:ros-file": "tsx src/services/ros-file-contents.test.ts && tsx src/services/mikrotik-response.test.ts",
     "test:scheduler": "tsx src/services/scheduler-running.test.ts && tsx src/services/scheduler-recorded-run.test.ts && tsx src/routes/scheduler.test.ts",
     "test:backups": "tsx src/services/backup-scheduler-run.test.ts && tsx src/services/backup-restore.test.ts && tsx src/services/backup-deletion.test.ts && tsx src/services/backup-dto.test.ts && tsx src/services/backup-storage-update.test.ts && tsx src/services/backup-job-execution.test.ts && tsx src/routes/backups-operations.test.ts && tsx src/services/s3-backup-client.test.ts",