Struct Ipv6Header 

#[repr(C)]
pub struct Ipv6Header {
    pub version_tc_flow: u32,
    pub payload_length: u16,
    pub next_header: u8,
    pub hop_limit: u8,
    pub source: [u8; 16],
    pub destination: [u8; 16],
}

IPv6 packet header (40 bytes fixed)

Layout:

• version_tc_flow (4 bytes): 4-bit version, 8-bit traffic class, 20-bit flow label
• payload_length (2 bytes): length of payload after this header (big-endian)
• next_header (1 byte): identifies the type of header immediately following
• hop_limit (1 byte): decremented by 1 at each forwarding node
• source (16 bytes): source IPv6 address
• destination (16 bytes): destination IPv6 address

Fields

version_tc_flow: u32

Version (4 bits), Traffic Class (8 bits), Flow Label (20 bits) – network byte order

payload_length: u16

Payload length in bytes (big-endian, does not include this header)

next_header: u8

Next header protocol number (TCP=6, UDP=17, ICMPv6=58)

hop_limit: u8

Hop limit (TTL equivalent)

source: [u8; 16]

Source IPv6 address (16 bytes)

destination: [u8; 16]

Destination IPv6 address (16 bytes)

Implementations

impl Ipv6Header

pub fn new(src: &Ipv6Address, dst: &Ipv6Address, next_header: u8) -> Self

Create a new IPv6 header with default values

pub fn version(&self) -> u8

Get the IP version field (should always be 6)

pub fn traffic_class(&self) -> u8

Get the traffic class field

pub fn flow_label(&self) -> u32

Get the flow label field

pub fn to_bytes(&self) -> [u8; 40]

Serialize header to bytes (big-endian)

Trait Implementations

impl Clone for Ipv6Header

fn clone(&self) -> Ipv6Header

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Ipv6Header

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Copy for Ipv6Header