ERROR message.
The client may decline to provide a body for the original address, and
- instead send a special null address (0.0.0.0 for IPv4, ::0 for IPv6, or "."
- for hostname). This signifies that the server should choose the original
+ instead send a special null address ("0.0.0.0" for IPv4, "::0" for IPv6, or
+ "." for hostname), signifying that the server should choose the original
address itself, and return that address in the DONE message. The server
- should ensure that an element of address space that is unlikely to be in
- actual use. If there is already an address mapped to the destination
- address, the server may reuse that mapping.
+ should ensure that it returns an element of address space that is unlikely
+ to be in actual use. If there is already an address mapped to the
+ destination address, the server may reuse that mapping.
If the original address is already mapped to a different address, the old
mapping is removed. If the original address and the destination address