pp2_write_to_buf
size_t pp2_write_to_buf(uint8_t* buf, size_t buflen,
size_t pp2_write_to_buf(uint8_t* buf, size_t buflen,
bytes_written = pp2_write_to_buf(sldns_buffer_begin(proxy_buf),
size_t pp2_write_to_buf(uint8_t* buf, size_t buflen,