Comment 8 for bug 1466129

I'm getting confused by conversations happening in 2 places at once, can we stick to using Launchpad for discussion of this bug please.

I do not like the idea Michael posed in email and code on github of using something like an ACL on the IOC. I think we need to do the multiple socket thing, for which the API is the existing EPICS_CAS_INTF_ADDR_LIST variable, as long as we can detect and/or convert between broadcast and node IP addresses, since the user might put either or even both in the list (we don't have to accept either/both [but it would be better if we can], but we would need to be able to detect the other and abort).