SLAAC and stateless DHCP are not working with stateless SG

Bug originally found by Alex Katz and reported in the bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2149731

Description of problem:
When a stateless security group is attached to the instance it fails to get an IPv6 address using SLAAC or stateless DHCP. An explicit rule is required to allow ICMPv6 traffic.

Checked with the custom security group (only egress traffic is allowed) as well as with the default security group (egress and ingress from the same SG are allowed).

Version-Release number of selected component (if applicable):
RHOS-17.1-RHEL-9-20221115.n.2
Red Hat Enterprise Linux release 9.1 (Plow)

How reproducible:
100%

Steps to Reproduce:
openstack network create net_dual_slaac
openstack subnet create --subnet-range 10.100.1.0/24 --network net_dual_slaac subnet_dual_slaac
openstack subnet create --subnet-range 2001:0:0:1::0/64 --ip-version 6 --ipv6-ra-mode slaac --ipv6-address-mode slaac --network net_dual_slaac subnet_dual_slaac_ipv6
openstack router create router_test_boot
EXT_NET=`openstack network list --external -f value -c Name`
openstack router set --external-gateway $EXT_NET router_test_boot
openstack router add subnet router_test_boot subnet_dual_slaac
openstack security group create --stateless test_sg
openstack server create --image <IMG> --flavor <FLAV> --network net_dual_slaac --security-group test_sg vm_1

Actual results:
only IPv4 address appear on the instance

Expected results:
IPv6 address is expected

Additional info:
can be worked around by adding icmpv6 rule:
# openstack security group rule create --ingress --protocol icmpv6 test_sg