Deciding How to Display IP Addresses (Windows CE 5.0)
If your applications use a graphical UI, before you convert the applications from IPv4 to IPv4/IPv6, you must make numerous decisions regarding how addresses of different lengths will display.
To decide how to display IP addresses
Decide whether the address will contain all sequences of zeros, such as FF02:0:0:0:0:0:0:2, or whether it will use the double-colon notation, such as FF02::2.
Decide whether to use a number- (hexadecimal) based or a name-based address representation.
Note In general, due to the length of IPv6 addresses, use names in the UI instead of using 128-bit addresses. If you use names, consider using naming conventions for the user interface and for use in error checking.
For maximum IPv6 address string length, see INET_ADDRSTRLEN in ws2tcpip.h.
Decide whether to identify specific parts of the addressing scheme. You may want to identify the following address parts:
- Subnet prefix, scope identifier, or other subfields
- Top Level Aggregator (TLA) that identifies the highest level in the routing hierarchy
- Next Level Aggregator (NLA) that identifies a specific customer site
- Site Level Aggregator (SLA) that is used by an organization to identify subnets within its site
Decide whether to discern embedded IPv6 addresses. If so, decide how the addresses will be handled and displayed.
Decide whether to discern between IPv4-compatible addresses and IPv4-mapped IPv6 addresses.
Next, you must run the Checkv4 utility as described in Running the Checkv4 Utility.
See Also
How to Convert an Application from IPv4 to IPv4/IPv6 | Unicast IPv6 Addresses
Send Feedback on this topic to the authors