node-specific rules

[Mr Dash Four]

I have a bit of a conundrum for the more knowledgeable on here: I would 
like to define a block in the policy file (.te) - via tunable_policy 
statement perhaps - which is executed based on a particular value set 
from outside. For example:

I would like to activate a block of the following statements:

network_node(XXX, s0 - mls_systemhigh, YYY, ZZZ)
corenet_tcp_sendrecv_XXX_if(my_t)
corenet_udp_sendrecv_XXX_if(my_t)
corenet_tcp_sendrecv_XXX_node(my_t)
corenet_tcp_bind_XXX_node(my_t)
corenet_udp_bind_XXX_node(my_t)


depending on a particular value being set for XXX, YYY and ZZZ (being 
the actual interface name, its IP address and netmask) from the outside 
- possibly via the SELinux tools. Is that possible?

The reason I am doing this is because I am writing a policy for a couple 
of domains/processes and want to restrict their access down to a 
particular node of particular number of interface which will be defined 
(i.e. the interface name, IP address and netmask) AFTER the policy has 
been built and once defined, the values may change. My SELinux knowledge 
is not that complete to figure out how to deal with this. Any help is, 
as always, appreciated. Thanks.