1[](https://crates.io/crates/etherparse) 2[](https://docs.rs/etherparse) 3[](https://github.com/JulianSchmid/etherparse/actions/workflows/main.yml) 4[](https://gitlab.com/julian.schmid/etherparse/-/commits/master) 5[](https://codecov.io/gh/JulianSchmid/etherparse) 6 7# etherparse 8 9A zero allocation supporting library for parsing & writing a bunch of packet based protocols (EthernetII, IPv4, IPv6, UDP, TCP ...). 10 11Currently supported are: 12* Ethernet II 13* IEEE 802.1Q VLAN Tagging Header 14* ARP 15* IPv4 16* IPv6 (supporting the most common extension headers, but not all) 17* UDP 18* TCP 19* ICMP & ICMPv6 (not all message types are supported) 20 21Reconstruction of fragmented IP packets is also supported, but requires allocations. 22 23## Usage 24 25Add the following to your `Cargo.toml`: 26 27```toml 28[dependencies] 29etherparse = "0.17" 30``` 31 32## What is etherparse? 33Etherparse is intended to provide the basic network parsing functions that allow for easy analysis, transformation or generation of recorded network data. 34 35Some key points are: 36 37* It is completely written in Rust and thoroughly tested. 38* Special attention has been paid to not use allocations or syscalls except in the "defragmentation" code. 39* The package is still in development and can & will still change. 40* The current focus of development is on the most popular protocols in the internet & transport layer. 41 42## How to parse network packages? 43Etherparse gives you two options for parsing network packages automatically: 44 45### Slicing the packet 46Here the different components in a packet are separated without parsing all their fields. For each header a slice is generated that allows access to the fields of a header. 47```rust 48match SlicedPacket::from_ethernet(&packet) { 49 Err(value) => println!("Err {:?}", value), 50 Ok(value) => { 51 println!("link: {:?}", value.link); 52 println!("vlan: {:?}", value.vlan); 53 println!("net: {:?}", value.net); // contains ip & arp 54 println!("transport: {:?}", value.transport); 55 } 56} 57``` 58This is the faster option if your code is not interested in all fields of all the headers. It is a good choice if you just want filter or find packets based on a subset of the headers and/or their fields. 59 60Depending from which point downward you want to slice a package check out the functions: 61 62* [`SlicedPacket::from_ethernet`](https://docs.rs/etherparse/~0/etherparse/struct.SlicedPacket.html#method.from_ethernet) for parsing from an Ethernet II header downwards 63* [`SlicedPacket::from_linux_sll`](https://docs.rs/etherparse/~0/etherparse/struct.SlicedPacket.html#method.from_linux_sll) for parsing from a Linux Cooked Capture v1 (SLL) downwards 64* [`SlicedPacket::from_ether_type`](https://docs.rs/etherparse/~0/etherparse/struct.SlicedPacket.html#method.from_ether_type) for parsing a slice starting after an Ethernet II header 65* [`SlicedPacket::from_ip`](https://docs.rs/etherparse/~0/etherparse/struct.SlicedPacket.html#method.from_ip) for parsing from an IPv4 or IPv6 downwards 66 67In case you want to parse cut off packets (e.g. packets returned in in ICMP message) you can use the "lax" parsing methods: 68 69* [`LaxSlicedPacket::from_ethernet`](https://docs.rs/etherparse/~0/etherparse/struct.LaxSlicedPacket.html#method.from_ethernet) for parsing from an Ethernet II header downwards 70* [`LaxSlicedPacket::from_ether_type`](https://docs.rs/etherparse/~0/etherparse/struct.LaxSlicedPacket.html#method.from_ether_type) for parsing a slice starting after an Ethernet II header 71* [`LaxSlicedPacket::from_ip`](https://docs.rs/etherparse/~0/etherparse/struct.LaxSlicedPacket.html#method.from_ip) for parsing from an IPv4 or IPv6 downwards 72 73### Deserializing all headers into structs 74This option deserializes all known headers and transfers their contents to header structs. 75```rust 76match PacketHeaders::from_ethernet_slice(&packet) { 77 Err(value) => println!("Err {:?}", value), 78 Ok(value) => { 79 println!("link: {:?}", value.link); 80 println!("vlan: {:?}", value.vlan); 81 println!("net: {:?}", value.net); // contains ip & arp 82 println!("transport: {:?}", value.transport); 83 } 84} 85``` 86This option is slower then slicing when only few fields are accessed. But it can be the faster option or useful if you are interested in most fields anyways or if you want to re-serialize the headers with modified values. 87 88Depending from which point downward you want to unpack a package check out the functions 89 90* [`PacketHeaders::from_ethernet_slice`](https://docs.rs/etherparse/~0/etherparse/struct.PacketHeaders.html#method.from_ethernet_slice) for parsing from an Ethernet II header downwards 91* [`PacketHeaders::from_ether_type`](https://docs.rs/etherparse/~0/etherparse/struct.PacketHeaders.html#method.from_ether_type) for parsing a slice starting after an Ethernet II header 92* [`PacketHeaders::from_ip_slice`](https://docs.rs/etherparse/~0/etherparse/struct.PacketHeaders.html#method.from_ip_slice) for parsing from an IPv4 or IPv6 downwards 93 94In case you want to parse cut off packets (e.g. packets returned in in ICMP message) you can use the "lax" parsing methods: 95 96* [`LaxPacketHeaders::from_ethernet`](https://docs.rs/etherparse/~0/etherparse/struct.LaxPacketHeaders.html#method.from_ethernet) for parsing from an Ethernet II header downwards 97* [`LaxPacketHeaders::from_ether_type`](https://docs.rs/etherparse/~0/etherparse/struct.LaxPacketHeaders.html#method.from_ether_type) for parsing a slice starting after an Ethernet II header 98* [`LaxPacketHeaders::from_ip`](https://docs.rs/etherparse/~0/etherparse/struct.LaxPacketHeaders.html#method.from_ip) for parsing from an IPv4 or IPv6 downwards 99 100### Manually slicing only one packet layer 101 102It is also possible to only slice one packet layer: 103 104* [`Ethernet2Slice::from_slice_without_fcs`](https://docs.rs/etherparse/~0/etherparse/struct.Ethernet2Slice.html#method.from_slice_without_fcs) & [`Ethernet2Slice::from_slice_with_crc32_fcs`](https://docs.rs/etherparse/~0/etherparse/struct.Ethernet2Slice.html#method.from_slice_with_crc32_fcs) 105* [`LinuxSllSlice::from_slice`](https://docs.rs/etherparse/~0/etherparse/struct.LinuxSllSlice.html#method.from_slice) 106* [`SingleVlanSlice::from_slice`](https://docs.rs/etherparse/~0/etherparse/struct.SingleVlanSlice.html#method.from_slice) & [`DoubleVlanSlice::from_slice`](https://docs.rs/etherparse/~0/etherparse/struct.DoubleVlanSlice.html#method.from_slice) 107* [`ArpPacketSlice::from_slice`](https://docs.rs/etherparse/~0/etherparse/struct.ArpPacketSlice.html#method.from_slice) 108* [`IpSlice::from_slice`](https://docs.rs/etherparse/~0/etherparse/enum.IpSlice.html#method.from_slice) & [`LaxIpSlice::from_slice`](https://docs.rs/etherparse/~0/etherparse/enum.LaxIpSlice.html#method.from_slice) 109* [`Ipv4Slice::from_slice`](https://docs.rs/etherparse/~0/etherparse/struct.Ipv4Slice.html#method.from_slice) & [`LaxIpv4Slice::from_slice`](https://docs.rs/etherparse/~0/etherparse/struct.LaxIpv4Slice.html#method.from_slice) 110* [`Ipv6Slice::from_slice`](https://docs.rs/etherparse/~0/etherparse/struct.Ipv6Slice.html#method.from_slice) & [`LaxIpv6Slice::from_slice`](https://docs.rs/etherparse/~0/etherparse/struct.LaxIpv6Slice.html#method.from_slice) 111* [`UdpSlice::from_slice`](https://docs.rs/etherparse/~0/etherparse/struct.UdpSlice.html#method.from_slice) & [`UdpSlice::from_slice_lax`](https://docs.rs/etherparse/~0/etherparse/struct.UdpSlice.html#method.from_slice_lax) 112* [`TcpSlice::from_slice`](https://docs.rs/etherparse/~0/etherparse/struct.TcpSlice.html#method.from_slice) 113* [`Icmpv4Slice::from_slice`](https://docs.rs/etherparse/~0/etherparse/struct.Icmpv4Slice.html#method.from_slice) 114* [`Icmpv6Slice::from_slice`](https://docs.rs/etherparse/~0/etherparse/struct.Icmpv6Slice.html#method.from_slice) 115 116The resulting data types allow access to both the header(s) and the payload of the layer 117and will automatically limit the length of payload if the layer has a length field limiting the 118payload (e.g. the payload of IPv6 packets will be limited by the "payload length" field in 119an IPv6 header). 120 121### Manually slicing & parsing only headers 122 123It is also possible just to parse headers. Have a look at the documentation for the 124following \[NAME\]HeaderSlice.from_slice methods, if you want to just slice the header: 125 126* [`Ethernet2HeaderSlice::from_slice`](https://docs.rs/etherparse/~0/etherparse/struct.Ethernet2HeaderSlice.html#method.from_slice) 127* [`LinuxSllHeaderSlice::from_slice`](https://docs.rs/etherparse/~0/etherparse/struct.LinuxSllHeaderSlice.html#method.from_slice) 128* [`SingleVlanHeaderSlice::from_slice`](https://docs.rs/etherparse/~0/etherparse/struct.SingleVlanHeaderSlice.html#method.from_slice) 129* [`DoubleVlanHeaderSlice::from_slice`](https://docs.rs/etherparse/~0/etherparse/struct.DoubleVlanHeaderSlice.html#method.from_slice) 130* [`Ipv4HeaderSlice::from_slice`](https://docs.rs/etherparse/~0/etherparse/struct.Ipv4HeaderSlice.html#method.from_slice) 131* [`Ipv4ExtensionsSlice::from_slice`](https://docs.rs/etherparse/~0/etherparse/struct.Ipv4ExtensionsSlice.html#method.from_slice) 132* [`Ipv6HeaderSlice::from_slice`](https://docs.rs/etherparse/~0/etherparse/struct.Ipv6HeaderSlice.html#method.from_slice) 133* [`Ipv6ExtensionsSlice::from_slice`](https://docs.rs/etherparse/~0/etherparse/struct.Ipv6ExtensionsSlice.html#method.from_slice) 134* [`Ipv6RawExtHeaderSlice::from_slice`](https://docs.rs/etherparse/~0/etherparse/struct.Ipv6RawExtHeaderSlice.html#method.from_slice) 135* [`IpAuthHeaderSlice::from_slice`](https://docs.rs/etherparse/~0/etherparse/struct.IpAuthHeaderSlice.html#method.from_slice) 136* [`Ipv6FragmentHeaderSlice::from_slice`](https://docs.rs/etherparse/~0/etherparse/struct.Ipv6FragmentHeaderSlice.html#method.from_slice) 137* [`UdpHeaderSlice::from_slice`](https://docs.rs/etherparse/~0/etherparse/struct.UdpHeaderSlice.html#method.from_slice) 138* [`TcpHeaderSlice::from_slice`](https://docs.rs/etherparse/~0/etherparse/struct.TcpHeaderSlice.html#method.from_slice) 139 140And for deserialization into the corresponding header structs have a look at: 141 142* [`Ethernet2Header::read`](https://docs.rs/etherparse/~0/etherparse/struct.Ethernet2Header.html#method.read) & [`Ethernet2Header::from_slice`](https://docs.rs/etherparse/~0/etherparse/struct.Ethernet2Header.html#method.from_slice) 143* [`LinuxSllHeader::read`](https://docs.rs/etherparse/~0/etherparse/struct.LinuxSllHeader.html#method.read) & [`LinuxSllHeader::from_slice`](https://docs.rs/etherparse/~0/etherparse/struct.LinuxSllHeader.html#method.from_slice) 144* [`SingleVlanHeader::read`](https://docs.rs/etherparse/~0/etherparse/struct.SingleVlanHeader.html#method.read) & [`SingleVlanHeader::from_slice`](https://docs.rs/etherparse/~0/etherparse/struct.SingleVlanHeader.html#method.from_slice) 145* [`DoubleVlanHeader::read`](https://docs.rs/etherparse/~0/etherparse/struct.DoubleVlanHeader.html#method.read) & [`DoubleVlanHeader::from_slice`](https://docs.rs/etherparse/~0/etherparse/struct.DoubleVlanHeader.html#method.from_slice) 146* [`ArpPacket::read`](https://docs.rs/etherparse/~0/etherparse/struct.ArpPacket.html#method.read) & [`ArpPacket::from_slice`](https://docs.rs/etherparse/~0/etherparse/struct.ArpPacket.html#method.from_slice) 147* [`IpHeaders::read`](https://docs.rs/etherparse/~0/etherparse/enum.IpHeaders.html#method.read) & [`IpHeaders::from_slice`](https://docs.rs/etherparse/~0/etherparse/enum.IpHeaders.html#method.from_slice) 148* [`Ipv4Header::read`](https://docs.rs/etherparse/~0/etherparse/struct.Ipv4Header.html#method.read) & [`Ipv4Header::from_slice`](https://docs.rs/etherparse/~0/etherparse/struct.Ipv4Header.html#method.from_slice) 149* [`Ipv4Extensions::read`](https://docs.rs/etherparse/~0/etherparse/struct.Ipv4Extensions.html#method.read) & [`Ipv4Extensions::from_slice`](https://docs.rs/etherparse/~0/etherparse/struct.Ipv4Extensions.html#method.from_slice) 150* [`Ipv6Header::read`](https://docs.rs/etherparse/~0/etherparse/struct.Ipv6Header.html#method.read) & [`Ipv6Header::from_slice`](https://docs.rs/etherparse/~0/etherparse/struct.Ipv6Header.html#method.from_slice) 151* [`Ipv6Extensions::read`](https://docs.rs/etherparse/~0/etherparse/struct.Ipv6Extensions.html#method.read) & [`Ipv6Extensions::from_slice`](https://docs.rs/etherparse/~0/etherparse/struct.Ipv6Extensions.html#method.from_slice) 152* [`Ipv6RawExtHeader::read`](https://docs.rs/etherparse/~0/etherparse/struct.Ipv6RawExtHeader.html#method.read) & [`Ipv6RawExtHeader::from_slice`](https://docs.rs/etherparse/~0/etherparse/struct.Ipv6RawExtHeader.html#method.from_slice) 153* [`IpAuthHeader::read`](https://docs.rs/etherparse/~0/etherparse/struct.IpAuthHeader.html#method.read) & [`IpAuthHeader::from_slice`](https://docs.rs/etherparse/~0/etherparse/struct.IpAuthHeader.html#method.from_slice) 154* [`Ipv6FragmentHeader::read`](https://docs.rs/etherparse/~0/etherparse/struct.Ipv6FragmentHeader.html#method.read) & [`Ipv6FragmentHeader::from_slice`](https://docs.rs/etherparse/~0/etherparse/struct.Ipv6FragmentHeader.html#method.from_slice) 155* [`UdpHeader::read`](https://docs.rs/etherparse/~0/etherparse/struct.UdpHeader.html#method.read) & [`UdpHeader::from_slice`](https://docs.rs/etherparse/~0/etherparse/struct.UdpHeader.html#method.from_slice) 156* [`TcpHeader::read`](https://docs.rs/etherparse/~0/etherparse/struct.TcpHeader.html#method.read) & [`TcpHeader::from_slice`](https://docs.rs/etherparse/~0/etherparse/struct.TcpHeader.html#method.from_slice) 157* [`Icmpv4Header::read`](https://docs.rs/etherparse/~0/etherparse/struct.Icmpv4Header.html#method.read) & [`Icmpv4Header::from_slice`](https://docs.rs/etherparse/~0/etherparse/struct.Icmpv4Header.html#method.from_slice) 158* [`Icmpv6Header::read`](https://docs.rs/etherparse/~0/etherparse/struct.Icmpv6Header.html#method.read) & [`Icmpv6Header::from_slice`](https://docs.rs/etherparse/~0/etherparse/struct.Icmpv6Header.html#method.from_slice) 159 160## How to generate fake packet data? 161 162### Packet Builder 163 164The PacketBuilder struct provides a high level interface for quickly creating network packets. The PacketBuilder will automatically set fields which can be deduced from the content and compositions of the packet itself (e.g. checksums, lengths, ethertype, ip protocol number). 165 166[Example:](etherparse/examples/write_udp.rs) 167```rust 168use etherparse::PacketBuilder; 169 170let builder = PacketBuilder:: 171 ethernet2([1,2,3,4,5,6], //source mac 172 [7,8,9,10,11,12]) //destination mac 173 .ipv4([192,168,1,1], //source ip 174 [192,168,1,2], //destination ip 175 20) //time to life 176 .udp(21, //source port 177 1234); //destination port 178 179//payload of the udp packet 180let payload = [1,2,3,4,5,6,7,8]; 181 182//get some memory to store the result 183let mut result = Vec::<u8>::with_capacity(builder.size(payload.len())); 184 185//serialize 186//this will automatically set all length fields, checksums and identifiers (ethertype & protocol) 187//before writing the packet out to "result" 188builder.write(&mut result, &payload).unwrap(); 189``` 190 191There is also an [example for TCP packets](etherparse/examples/write_tcp.rs) available. 192 193Check out the [PacketBuilder documentation](https://docs.rs/etherparse/~0/etherparse/struct.PacketBuilder.html) for more information. 194 195### Manually serializing each header 196Alternatively it is possible to manually build a packet ([example](etherparse/examples/write_ipv4_udp.rs)). Generally each struct representing a header has a "write" method that allows it to be serialized. These write methods sometimes automatically calculate checksums and fill them in. In case this is unwanted behavior (e.g. if you want to generate a packet with an invalid checksum), it is also possible to call a "write_raw" method that will simply serialize the data without doing checksum calculations. 197 198Read the documentations of the different methods for a more details: 199 200* [`Ethernet2Header::to_bytes`](https://docs.rs/etherparse/~0/etherparse/struct.Ethernet2Header.html#method.to_bytes) & [`Ethernet2Header::write`](https://docs.rs/etherparse/~0/etherparse/struct.Ethernet2Header.html#method.write) 201* [`LinuxSllHeader::to_bytes`](https://docs.rs/etherparse/~0/etherparse/struct.LinuxSllHeader.html#method.to_bytes) & [`LinuxSllHeader::write`](https://docs.rs/etherparse/~0/etherparse/struct.LinuxSllHeader.html#method.write) 202* [`SingleVlanHeader::to_bytes`](https://docs.rs/etherparse/~0/etherparse/struct.SingleVlanHeader.html#method.to_bytes) & [`SingleVlanHeader::write`](https://docs.rs/etherparse/~0/etherparse/struct.SingleVlanHeader.html#method.write) 203* [`DoubleVlanHeader::to_bytes`](https://docs.rs/etherparse/~0/etherparse/struct.DoubleVlanHeader.html#method.to_bytes) & [`DoubleVlanHeader::write`](https://docs.rs/etherparse/~0/etherparse/struct.DoubleVlanHeader.html#method.write) 204* [`ArpPacket::to_bytes`](https://docs.rs/etherparse/~0/etherparse/struct.ArpPacket.html#method.to_bytes) & [`ArpPacket::write`](https://docs.rs/etherparse/~0/etherparse/struct.ArpPacket.html#method.write) 205* [`ArpEthIpv4Packet::to_bytes`](https://docs.rs/etherparse/~0/etherparse/struct.ArpEthIpv4Packet.html#method.to_bytes) 206* [`Ipv4Header::to_bytes`](https://docs.rs/etherparse/~0/etherparse/struct.Ipv4Header.html#method.to_bytes) & [`Ipv4Header::write`](https://docs.rs/etherparse/~0/etherparse/struct.Ipv4Header.html#method.write) & [`Ipv4Header::write_raw`](https://docs.rs/etherparse/~0/etherparse/struct.Ipv4Header.html#method.write_raw) 207* [`Ipv4Extensions::write`](https://docs.rs/etherparse/~0/etherparse/struct.Ipv4Extensions.html#method.write) 208* [`Ipv6Header::to_bytes`](https://docs.rs/etherparse/~0/etherparse/struct.Ipv6Header.html#method.to_bytes) & [`Ipv6Header::write`](https://docs.rs/etherparse/~0/etherparse/struct.Ipv6Header.html#method.write) 209* [`Ipv6Extensions::write`](https://docs.rs/etherparse/~0/etherparse/struct.Ipv6Extensions.html#method.write) 210* [`Ipv6RawExtHeader::to_bytes`](https://docs.rs/etherparse/~0/etherparse/struct.Ipv6RawExtHeader.html#method.to_bytes) & [`Ipv6RawExtHeader::write`](https://docs.rs/etherparse/~0/etherparse/struct.Ipv6RawExtHeader.html#method.write) 211* [`IpAuthHeader::to_bytes`](https://docs.rs/etherparse/~0/etherparse/struct.IpAuthHeader.html#method.to_bytes) & [`IpAuthHeader::write`](https://docs.rs/etherparse/~0/etherparse/struct.IpAuthHeader.html#method.write) 212* [`Ipv6FragmentHeader::to_bytes`](https://docs.rs/etherparse/~0/etherparse/struct.Ipv6FragmentHeader.html#method.to_bytes) & [`Ipv6FragmentHeader::write`](https://docs.rs/etherparse/~0/etherparse/struct.Ipv6FragmentHeader.html#method.write) 213* [`UdpHeader::to_bytes`](https://docs.rs/etherparse/~0/etherparse/struct.UdpHeader.html#method.to_bytes) & [`UdpHeader::write`](https://docs.rs/etherparse/~0/etherparse/struct.UdpHeader.html#method.write) 214* [`TcpHeader::to_bytes`](https://docs.rs/etherparse/~0/etherparse/struct.TcpHeader.html#method.to_bytes) & [`TcpHeader::write`](https://docs.rs/etherparse/~0/etherparse/struct.TcpHeader.html#method.write) 215* [`Icmpv4Header::to_bytes`](https://docs.rs/etherparse/~0/etherparse/struct.Icmpv4Header.html#method.to_bytes) & [`Icmpv4Header::write`](https://docs.rs/etherparse/~0/etherparse/struct.Icmpv4Header.html#method.write) 216* [`Icmpv6Header::to_bytes`](https://docs.rs/etherparse/~0/etherparse/struct.Icmpv6Header.html#method.to_bytes) & [`Icmpv6Header::write`](https://docs.rs/etherparse/~0/etherparse/struct.Icmpv6Header.html#method.write) 217 218## References 219* Darpa Internet Program Protocol Specification [RFC 791](https://tools.ietf.org/html/rfc791) 220* Internet Protocol, Version 6 (IPv6) Specification [RFC 8200](https://tools.ietf.org/html/rfc8200) 221* [IANA Protocol Numbers](https://www.iana.org/assignments/protocol-numbers/protocol-numbers.xhtml) 222* [Internet Protocol Version 6 (IPv6) Parameters](https://www.iana.org/assignments/ipv6-parameters/ipv6-parameters.xhtml) 223* [Wikipedia IEEE_802.1Q](https://en.wikipedia.org/w/index.php?title=IEEE_802.1Q&oldid=820983900) 224* User Datagram Protocol (UDP) [RFC 768](https://tools.ietf.org/html/rfc768) 225* Transmission Control Protocol [RFC 793](https://tools.ietf.org/html/rfc793) 226* TCP Extensions for High Performance [RFC 7323](https://tools.ietf.org/html/rfc7323) 227* The Addition of Explicit Congestion Notification (ECN) to IP [RFC 3168](https://tools.ietf.org/html/rfc3168) 228* Robust Explicit Congestion Notification (ECN) Signaling with Nonces [RFC 3540](https://tools.ietf.org/html/rfc3540) 229* IP Authentication Header [RFC 4302](https://tools.ietf.org/html/rfc4302) 230* Mobility Support in IPv6 [RFC 6275](https://tools.ietf.org/html/rfc6275) 231* Host Identity Protocol Version 2 (HIPv2) [RFC 7401](https://tools.ietf.org/html/rfc7401) 232* Shim6: Level 3 Multihoming Shim Protocol for IPv6 [RFC 5533](https://tools.ietf.org/html/rfc5533) 233* Computing the Internet Checksum [RFC 1071](https://datatracker.ietf.org/doc/html/rfc1071) 234* Internet Control Message Protocol [RFC 792](https://datatracker.ietf.org/doc/html/rfc792) 235* [IANA Internet Control Message Protocol (ICMP) Parameters](https://www.iana.org/assignments/icmp-parameters/icmp-parameters.xhtml) 236* Requirements for Internet Hosts -- Communication Layers [RFC 1122](https://datatracker.ietf.org/doc/html/rfc1122) 237* Requirements for IP Version 4 Routers [RFC 1812](https://datatracker.ietf.org/doc/html/rfc1812) 238* Internet Control Message Protocol (ICMPv6) for the Internet Protocol Version 6 (IPv6) Specification [RFC 4443](https://datatracker.ietf.org/doc/html/rfc4443) 239* ICMP Router Discovery Messages [RFC 1256](https://datatracker.ietf.org/doc/html/rfc1256) 240* [Internet Control Message Protocol version 6 (ICMPv6) Parameters](https://www.iana.org/assignments/icmpv6-parameters/icmpv6-parameters.xhtml) 241* Multicast Listener Discovery (MLD) for IPv6 [RFC 2710](https://datatracker.ietf.org/doc/html/rfc2710) 242* Neighbor Discovery for IP version 6 (IPv6) [RFC 4861](https://datatracker.ietf.org/doc/html/rfc4861) 243* [LINKTYPE_LINUX_SLL](https://www.tcpdump.org/linktypes/LINKTYPE_LINUX_SLL.html) on tcpdump 244* LINUX_SLL [header definition](https://github.com/the-tcpdump-group/libpcap/blob/a932566fa1f6df16176ac702b1762ea1cd9ed9a3/pcap/sll.h) on libpcap 245* [Linux packet types definitions](https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/plain/include/uapi/linux/if_packet.h?id=e33c4963bf536900f917fb65a687724d5539bc21) on the Linux kernel 246* Address Resolution Protocol (ARP) Parameters [Harware Types](https://www.iana.org/assignments/arp-parameters/arp-parameters.xhtml#arp-parameters-2) 247* [Arp hardware identifiers definitions](https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/plain/include/uapi/linux/if_arp.h?id=e33c4963bf536900f917fb65a687724d5539bc21) on the Linux kernel 248 249## License 250Licensed under either of Apache License, Version 2.0 or MIT license at your option. The corresponding license texts can be found in the LICENSE-APACHE file and the LICENSE-MIT file. 251 252### Contribution 253Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you shall be licensed as above, without any additional terms or conditions. 254