- Rename host.v1 dialIntercepted* properties to forward*
- Add allowed* properties to whitelist destinations that are dialed via forward*
- Add allowedSourceAddresses, which serves as a whitelist for source IPs/CIDRs and informs the hosting tunneler of the local routes to establish when hosting a service
* handle signals from within the service poller to enable selective route cleanup
* update iptables dependency
* use refcounts to track shared addresses
* add single entry to intercept LUT per service
* tidy
* don't panic when intercept address isn't in LUT
* deal with multiple intercept addresses per service.
* don't preallocate array.
* use syscall package for all signals.
Eugene K