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action #157738

Updated by dheidler 7 months ago

## Motivation 
 In #155929 we enabled RSTP in OSD and it was just fine, probably helpful and introduced not problems. But on o3 we still use STP, that was not migrated in #155929 so we should do that now. 

 ## Acceptance criteria 
 * **AC1:** RSTP is used on all current o3 machines instead of STP 

 ## Suggestions 
 * Just change the wicked_gre tunnel scripts on o3 machines to use rstp instead of stp, `wicked ifup all` and check the debugging steps from http://open.qa/docs/#_multi_machine_test_setup, e.g. `ovs-appctl rstp/show` 
 * Make sure that STP is not still enabled additionally to rstp (`ovs-vsctl set bridge $bridge stp_enable=false; ovs-appctl stp/show`)

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