Multiple public networks per zone ?

[Lukáš Mrtvý]

Is possible to create multiple public networks per zone ?  ( traffic type:
Public )
I would like to put systemvms to this network to save two "Public" IPv4,
these aren't cheap these days. The use case would be to deploy systemvms
to RFC1918 external network and use a reverse proxy to access cloudstack
webui and systemvms from the internet via this reverse proxy. The other
public network would be an actual WAN. ( NAT isn't solution )
Thanks
BR,
LM