se_ctrladdr_in
ntohs(sep->se_ctrladdr_in.sin_port) >=
sep->se_ctrladdr_in.sin_family = AF_INET;
sep->se_ctrladdr_size = sizeof sep->se_ctrladdr_in;
if (port != sep->se_ctrladdr_in.sin_port) {
sep->se_ctrladdr_in.sin_port = port;
sep->se_ctrladdr_in.sin_port = 0;
r = bindresvport(sep->se_fd, &sep->se_ctrladdr_in);
bcmp(&old->se_ctrladdr_in.sin_addr,
&new->se_ctrladdr_in.sin_addr,
sizeof(new->se_ctrladdr_in.sin_addr)) != 0)