This function will remove the supplied remote host address from all ACM pools that have a matching entry. If ACM is being used then this may stop future requests from the remote host being processed.
ipaddr can describe either
AF_INET (for IPv4) or
(for IPv6) family address, with
the size of the relevant address family.
Cyg_ErrNo error code is returned,
with ENOERR indicating success. If the ModbusTCP
ACM is not provided by the attached transport layer
then ENOENT is returned. The
error EIO indicates a failure to communicate with
the server control thread. The transport specific implementation may
return further error indications as appropriate.