The problem of bpdu forwarding through the router port on which STP is disabled during the router reboot. hap ac2.

Hello!

Scheme:

switch>router(hap ac2)>ISP

switch is connected by its port 9 to port 2 of router, and port 1 of router is connected to ISP.
router port 2 is added to bridge1, router port 1 is not a bridge member.
STP is configured and enabled between the switch and router.
STP is disabled on port 1 of router.

Sometimes, when the router is rebooted, the BPDU from the switch reaches the ISP through the router.

How can I solve the problem of forwarding BPDUs through a router while it is loading?

ROS and firmware version: 6.47.8.