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We need to think about how to handle these hosts with both IPv4 and IPv6 addresses. Les is leaning We could do nothing, the simplest solution. Or we could move towards moving to the future and simply changing change the IPv4 addresses to IPv6 addresses. In a few cases, we may be able to find two hosts at a site or two names for the same host (i.e. an A and a CNAME record), using an IPv4 address on one and an IPv6 on the other. This is the next simplest solution. Doing this loses having a historical record of a target with both an IPv4 and IPv6 address. Umar and Les have some scripts that enable comparisons to be made between access to a host via its IPV4 and its IPv6 address without using the PingER data. An alternative would be to also have a pseudo name for such ambiguous hosts, another would be to modify the database schema. Both of the latter two would require changes to the code in several places. Another alternative might be to create a second record using either the IPv4 or IPv6 address as the name. This requires no changes to the code but is pretty unpleasant. If one could find a CNAME as well as the regular name (A reg) then one could use the CNAME for one of the addresses and the regular name for the other address.
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