weizhouapache commented on issue #7961:
URL: https://github.com/apache/cloudstack/issues/7961#issuecomment-1748758597
@alamintech
the firewall rules are generated by
/usr/share/cloudstack-common/scripts/vm/network/security_group.py
you can modify the file on kvm host
```
@@ -1198,6 +1198,7 @@ def add_network_rules(vm_name, vm_id, vm_ip, vm_ip6,
signature, seqno, vmMac, ru
vmchain = iptables_chain_name(vm_name)
+ execute('iptables -A ' + vmchain + ' -m pkttype --pkt-type
multicast -j ACCEPT')
execute('iptables -A ' + vmchain + ' -j DROP')
execute('ip6tables -A ' + vmchain + ' -j DROP')
```
it is not tested
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