#include <netinet/in.h>
int inet6_opt_append_ts64(void *extension_buffer,
socklen_t extension_length,
int offset,
uint8_t option_type,
socklen_t option_length,
uint32_t alignment,
void * __ptr64 data_bufferp)
The inet6_opt_append_ts64() function returns the updated total length of the extension header after adding the new option of length, option_length, and alignment, alignment. If extension_buffer is not NULL, it will also insert any padding required to align the option, initialize the option by setting the type and length fields, and return a pointer to the location for the option content in data_bufferp. inet6_opt_append_ts64() differs from inet6_opt_append() in that inet6_opt_append_ts64() accepts 8-byte teraspace pointers.
For a discussion of the parameters, authorities required, return values, and other related information, see inet6_opt_append()--Append New Option to IPv6 Extension Header.
All of the usage notes for inet6_opt_append()--Append New Option to IPv6 Extension Header apply to inet6_opt_append_ts64().