Is it platform specific

generic

Importance or Severity

Medium

Description of the bug

These topo files use same asn for VMs in each tier. This causes test_bgp_allow_list.py to fail because VMs discard routes contain their own asn.
topo_t1-isolated-v6-d56u1-lag.yml was fixed in #19202 already.

Steps to Reproduce

Run test_bgp_allow_list.py on these topos.
Routes propagate from one of downstream VM to DUT to other VMs, route check on other downstream VMs will fail because they discard routes contain their own asn.

Actual Behavior and Expected Behavior

route check on downstream VMs should pass.

Relevant log output

Output of show version

Attach files (if any)

No response