Commit list:

6bd4f2927 Prepare for 23.09.7.
ad065f1a8 Set release date for 23.09.6.
794516415 ovs: Bump submodule to OVS v3.2.3.
883c3679c ipam: Do not report error for static assigned IPs.
44fe79b1e ovn-trace: Fix copy-paste error for tracing put_nd_ra_opts().
d762c8fc9 controller: Properly handle localnet flows in I+P.
b267acd6f controller: Accept unicast dhcp-discover in pinctrl_handle_put_dhcp_opts().
13b2efae6 ovn-ic: Fix potential segmentation violation.
d1f55ee81 controller: Container lport install flows in MAIN chassis only.
d7738bdc2 ci: Pin scapy version.
e2fa4a52c northd: Respect --ecmp-symmetric-reply for single routes.
5c78002d0 controller: Avoid quadratic complexity for multi-chassis ports.
8e97c0674 northd: Fix NULL pointer deref within build_bfd_table.
db7c577ec physical: Prevent wrong FDB to be learned with multichassis port.
fa8e36f5a ovn-controller: Fix potential assert when exiting.