prison_local_ip4
if ((error = prison_local_ip4(cred, &laddr)) != 0)
error = prison_local_ip4(cred, &sin->sin_addr);
error = prison_local_ip4(inp->inp_cred,
if ((error = prison_local_ip4(td->td_ucred, &sin->sin_addr)) != 0) {
(error = prison_local_ip4(td->td_ucred, &(((struct sockaddr_in *)sa)->sin_addr)))) {
(error = prison_local_ip4(td->td_ucred, &(((struct sockaddr_in *)sa)->sin_addr)))) {
int prison_local_ip4(struct ucred *cred, struct in_addr *ia);