Kerns Ipv6 Header Format Explanation Pdf

Management Changes in IPv6 share.confex.com

IPv6 Protocol IPv6 Dissemination and Exploitation

ipv6 header format explanation pdf

IPv6 Core Protocols Implementation 1st Edition. IPv4 and IPv6 address formats Octets or segments, or a combination of both, make up Internet Protocol version 4 (IPv4) and Internet Protocol version 6 (IPv6) addresses. An IPv4 address has the following format…, TIME WAIT Problems with closed socket - What if nal ack is lost in the network? - What if the same port pair is immediately reused for a new connection?.

IPv6 Security RIPE Network Coordination Centre

Cisco Self-Study Implementing Cisco IPv6 Networks (IPV6. Figure 3: IPv6 Packet Header and Fragmentation Header An IPv6 router cannot fragment an IPv6 packet, so if the packet is too large for the next hop the router is required to generate an ICMP6 Type 2 packet, addressed to the source of the packet with a Packet Too Big (PTB) code, and also providing the MTU size of the next hop., IPv4 and IPv6 address formats Octets or segments, or a combination of both, make up Internet Protocol version 4 (IPv4) and Internet Protocol version 6 (IPv6) addresses. An IPv4 address has the following format….

IPv6 extension headers are optional headers that may follow the basic IPv6 header. Several types of extension headers are defined in RFC 2460, Internet Protocol, Version 6 (IPv6) Specification . One IPv6 packet may include zero, one, or multiple extension headers. The IPv6 header and extension headers replace the existing IPv4 IP header with options. The new extension header format allows IPv6 to be augmented to support future needs and capabilities. Unlike options in the IPv4 header, IPv6 extension headers have no maximum size and can expand to accommodate all the extension data needed for IPv6 communication.

AN IPV6 ROUTER OPTIMIZATION. The interpretation of the Header Extension Length field in the Hop-by-Hop Options header is another example of how the designers of IPv6 wanted to optimize processing of IPv6 packets at intermediate routers. Download this article in .PDF format. If you are using Internet or almost any computer network you will likely using IPv4 packets. IPv4 uses 32-bit source and destination address fields.

RFC5308 adds IPv6 address family support to IS-IS RFC5120 defines Multi-Topology concept for IS-IS Permits IPv4 and IPv6 topologies which are not identical IPv4 and IPv6 address formats Octets or segments, or a combination of both, make up Internet Protocol version 4 (IPv4) and Internet Protocol version 6 (IPv6) addresses. An IPv4 address has the following format…

RFC5308 adds IPv6 address family support to IS-IS RFC5120 defines Multi-Topology concept for IS-IS Permits IPv4 and IPv6 topologies which are not identical The wonder of IPv6 lies in its header. An IPv6 address is 4 times larger than IPv4, but surprisingly, the header of an IPv6 address is only 2 times larger than that of IPv4.

IPv6 Protocol (RFC 2460 DS) DITCHE, Port Elizabeth, Sep. 2005 IPv4 Header Ver. Identifier fragment Total Length flags 2 0 B y t e s 32 bits ToS Options IHL TTL Protocol Checksum Source Address Destination Address. 2 DITCHE, Port Elizabeth, Sep. 2005 Ver. Identifier fragment Total Length flags 2 0 B y t e s 32 bits ToS TTL Protocol Checksum Source Address Destination Address IPv4 Header … IPv6 Protocol (RFC 2460 DS) DITCHE, Port Elizabeth, Sep. 2005 IPv4 Header Ver. Identifier fragment Total Length flags 2 0 B y t e s 32 bits ToS Options IHL TTL Protocol Checksum Source Address Destination Address. 2 DITCHE, Port Elizabeth, Sep. 2005 Ver. Identifier fragment Total Length flags 2 0 B y t e s 32 bits ToS TTL Protocol Checksum Source Address Destination Address IPv4 Header …

Element/field. Description. iph_ver. 4 bits of the version of IP currently used, the ip version is 4 (other version is IPv6). iph_ihl. 4 bits, the ip header (datagram) length in 32 bits octets (bytes) that point to the beginning of the data. AN IPV6 ROUTER OPTIMIZATION. The interpretation of the Header Extension Length field in the Hop-by-Hop Options header is another example of how the designers of IPv6 wanted to optimize processing of IPv6 packets at intermediate routers.

IPv6 Datagram Main Header Format (Page 1 of 3) As we saw in the previous topic, IPv6 datagrams use a structure that includes a regular header and optionally, one or more extension headers. An example of a logical interface is a “tunnel” interface that is used to send IPv6 packets across an IPv4 network by encapsulating the IPv6 packet inside an IPv4 header. Address An identifier that can be used as the source or destination of IPv6 packets that is assigned at the IPv6 layer to …

Download this article in .PDF format. If you are using Internet or almost any computer network you will likely using IPv4 packets. IPv4 uses 32-bit source and destination address fields. Options integrated in header fields Options supported with extensions headers (simpler header format) Figures 1 and 2 compare the header of a IPv4 packet and an IPv6 packet. Even if you don’t study packet header fields, you can see the difference between the IPv4 header (fragmentation fields are . italicized) and the “streamlined” IPv6 header. Note the reduction in header fields in the

An example of a logical interface is a “tunnel” interface that is used to send IPv6 packets across an IPv4 network by encapsulating the IPv6 packet inside an IPv4 header. Address An identifier that can be used as the source or destination of IPv6 packets that is assigned at the IPv6 layer to … The total length includes the length of header as well as the data field. The field length of this fields is 16 bits so the total length of the IP datagram is restricted to (26 - 1) = 65535 bytes of which 20 to 60 bytes are the header and the remaining are data.

– IPv6 should keep most of the characteristics of IPv4 (good design) – Changing the address fields is the big thing with IPv6 – While modifying the header, improvements have been introduced 23/02/2011 · Business Service Management for Performance IPv6 Header 3 IPv4 header is 20 bytes : IPv6 header is 40 bytes . Address increased from 32 to 128 bits

13/04/2017В В· In this video, you will come to know about each and every filed of IPv4 and IPv6. RFC5308 adds IPv6 address family support to IS-IS RFC5120 defines Multi-Topology concept for IS-IS Permits IPv4 and IPv6 topologies which are not identical

RFC5308 adds IPv6 address family support to IS-IS RFC5120 defines Multi-Topology concept for IS-IS Permits IPv4 and IPv6 topologies which are not identical IPv6 Datagram Main Header Format (Page 1 of 3) As we saw in the previous topic, IPv6 datagrams use a structure that includes a regular header and optionally, one or more extension headers.

Any proposal to create or specify a new IPv6 extension header MUST include a detailed technical explanation of why no existing IPv6 extension header can be used in the document proposing the new IPv6 extension header. Features of IPv6 • Simplified header format – Some IPv4 fields dropped or made optional – IPv6 packet header only twice the size of v4 header, even though address is four times a v4 address IPv4 Header = 20 bytes Source Address 32 bits Destination Address 32 bits IPv6 Header = 40 bytes Source Address 128 bits Destination Address 128 bits. Features of IPv6 • Extension headers

The total length includes the length of header as well as the data field. The field length of this fields is 16 bits so the total length of the IP datagram is restricted to (26 - 1) = 65535 bytes of which 20 to 60 bytes are the header and the remaining are data. IPv6 Datagram Main Header Format (Page 1 of 3) As we saw in the previous topic, IPv6 datagrams use a structure that includes a regular header and optionally, one or more extension headers.

• The size of IPv6 header is much bigger than that of IPv4 header, because of IPv6 address size. IPv4 addresses are 32bit binary numbers and IPv6 addresses are 128 bit binary numbers . • In IPv4 header , the source and destination IPv4 addresses are 32 bit binary numbers . Any proposal to create or specify a new IPv6 extension header MUST include a detailed technical explanation of why no existing IPv6 extension header can be used in the document proposing the new IPv6 extension header.

IPv6 Extension Headers Review and Considerations [IP. Download this article in .PDF format. If you are using Internet or almost any computer network you will likely using IPv4 packets. IPv4 uses 32-bit source and destination address fields., Figure 3: IPv6 Packet Header and Fragmentation Header An IPv6 router cannot fragment an IPv6 packet, so if the packet is too large for the next hop the router is required to generate an ICMP6 Type 2 packet, addressed to the source of the packet with a Packet Too Big (PTB) code, and also providing the MTU size of the next hop..

IPv6 packet Wikipedia

ipv6 header format explanation pdf

Management Changes in IPv6 share.confex.com. !4 Overview Basic IPv6 Protocol Security (Basic header, Extension Headers, Addressing) IPv6 Associated Protocols Security (ICMPv6, NDP, MLD, DNS, DHCPv6), Ethernet frame types and the EtherType field Frames are the format of data packets on the wire. There are five types of Ethernet frame: • Original Ethernet Version I (no longer used).

The TCP/IP Guide IPv6 Datagram Main Header Format

ipv6 header format explanation pdf

IPV6 HEADER euclid.nmu.edu. some explanation is needed. So the header has all sorts of information. In the kernel, TCP header is accessed by pointer the sk_buff (stands for socket buffer). The sk_buff is probably the most important structure in the networking of the kernel. The sk_buff is essentially the An IPv6 packet is the smallest message entity exchanged via the Internet Protocol across an Internet Protocol version 6 (IPv6) network. Packets consist of control information for addressing and routing, and a payload consisting of user data..

ipv6 header format explanation pdf


23/02/2011В В· Business Service Management for Performance IPv6 Header 3 IPv4 header is 20 bytes : IPv6 header is 40 bytes . Address increased from 32 to 128 bits The wonder of IPv6 lies in its header. An IPv6 address is 4 times larger than IPv4, but surprisingly, the header of an IPv6 address is only 2 times larger than that of IPv4.

IPv6 extension headers are optional headers that may follow the basic IPv6 header. Several types of extension headers are defined in RFC 2460, Internet Protocol, Version 6 (IPv6) Specification . One IPv6 packet may include zero, one, or multiple extension headers. Instead, the options field is one of the possible next headers pointed to from within the IPv6 header. That is, just as TCP or UDP protocol headers can be the next header within an IP packet, so too can an options field. The removal of the options field results in a fixed-length, 40-byte IP header.

• The size of IPv6 header is much bigger than that of IPv4 header, because of IPv6 address size. IPv4 addresses are 32bit binary numbers and IPv6 addresses are 128 bit binary numbers . • In IPv4 header , the source and destination IPv4 addresses are 32 bit binary numbers . The wonder of IPv6 lies in its header. An IPv6 address is 4 times larger than IPv4, but surprisingly, the header of an IPv6 address is only 2 times larger than that of IPv4.

What is the difference between IPv4 and IPv6 Headers? IPv4 is the fourth version of the Internet Protocol and IPv6 is the successor of IPv6. The most important difference between these two is the size of address space. IPv4 allows only 32 bit source and destination addresses, whereas IPv6 allows 128 bit source and destination addresses. This makes the address space of IPv4 4.3×10 9 (2 32) and Options integrated in header fields Options supported with extensions headers (simpler header format) Figures 1 and 2 compare the header of a IPv4 packet and an IPv6 packet. Even if you don’t study packet header fields, you can see the difference between the IPv4 header (fragmentation fields are . italicized) and the “streamlined” IPv6 header. Note the reduction in header fields in the

The IPv6 header and extension headers replace the existing IPv4 IP header with options. The new extension header format allows IPv6 to be augmented to support future needs and capabilities. Unlike options in the IPv4 header, IPv6 extension headers have no maximum size and can expand to accommodate all the extension data needed for IPv6 communication. IP Header. Protocol Version(4 bits): This is the first field in the protocol header. This field occupies 4 bits. This signifies the current IP protocol version being used.

Element/field. Description. iph_ver. 4 bits of the version of IP currently used, the ip version is 4 (other version is IPv6). iph_ihl. 4 bits, the ip header (datagram) length in 32 bits octets (bytes) that point to the beginning of the data. An IP address (IPv4) is a 32-bit sequence of ones and zeros.To make the IP address easier to work with, it is usually written as four decimal numbers separated by periods. For example, an IP address of one computer is 192.168.1.2. Another computer might have the address 128.10.2.1. This is called the dotted decimal format. Each part of the address is called an octet because it is made up of

TIME WAIT Problems with closed socket - What if nal ack is lost in the network? - What if the same port pair is immediately reused for a new connection? The total length includes the length of header as well as the data field. The field length of this fields is 16 bits so the total length of the IP datagram is restricted to (26 - 1) = 65535 bytes of which 20 to 60 bytes are the header and the remaining are data.

Download this article in .PDF format. If you are using Internet or almost any computer network you will likely using IPv4 packets. IPv4 uses 32-bit source and destination address fields. The IPv6 protocol defines a set of headers, including the basic IPv6 header and the IPv6 extension headers. Header Format The following figure shows the elements that appear in the IPv6 header and the order in which the elements appear.

ipv6 header format explanation pdf

IPv4 and IPv6 address formats Octets or segments, or a combination of both, make up Internet Protocol version 4 (IPv4) and Internet Protocol version 6 (IPv6) addresses. An IPv4 address has the following format… Instead, the options field is one of the possible next headers pointed to from within the IPv6 header. That is, just as TCP or UDP protocol headers can be the next header within an IP packet, so too can an options field. The removal of the options field results in a fixed-length, 40-byte IP header.

IPv4 Header Format vs. IPv6 (IPv6 What Why How Slide 19)

ipv6 header format explanation pdf

IPv6 Address Types & Format Explained with Examples. !4 Overview Basic IPv6 Protocol Security (Basic header, Extension Headers, Addressing) IPv6 Associated Protocols Security (ICMPv6, NDP, MLD, DNS, DHCPv6), IP Header. Protocol Version(4 bits): This is the first field in the protocol header. This field occupies 4 bits. This signifies the current IP protocol version being used..

Comparison between IPv4 Header and IPv6 Header OmniSecu

L2 / L3 Switches Internet Protocol IPv6 Configuration Guide. IPv6 is using two distinct types of headers: Main/Regular IPv6 Header and IPv6 Extension Headers. The main IPv6 header is equivalent to the basic IPv4 one despite some field differences that are the result of lessons learned from operating IPv4., IPv6 Packet Header Format. The IPv6 protocol defines a set of headers, including the basic IPv6 header and the IPv6 extension headers. The following figure shows the fields that appear in the IPv6 header and the order in which the fields appear..

RFC 2460 IPv6 Specification December 1998 The exception referred to in the preceding paragraph is the Hop-by-Hop Options header, which carries information that must be examined as an EtherType, and the use of the new frame format. This is now supported in the IEEE This is now supported in the IEEE 802 protocols using the SNAP header.

3 Internet Protocol version 6 3.1 Introduction 3.2 IPv6 Header Format 3.2.1 Comparison to the IPv4 Header 3.3 IPv6 Extension Headers Extensive line-by-line code listings with meticulous explanation of their rationale and use for the KAME snapshot implementation, which is generally applicable to most recent versions of the KAME IPv6 stack including those in recent releases of BSD variants Features of IPv6 • Simplified header format – Some IPv4 fields dropped or made optional – IPv6 packet header only twice the size of v4 header, even though address is four times a v4 address IPv4 Header = 20 bytes Source Address 32 bits Destination Address 32 bits IPv6 Header = 40 bytes Source Address 128 bits Destination Address 128 bits. Features of IPv6 • Extension headers

IPv4 and IPv6 address formats Octets or segments, or a combination of both, make up Internet Protocol version 4 (IPv4) and Internet Protocol version 6 (IPv6) addresses. An IPv4 address has the following format… The IPv6 protocol defines a set of headers, including the basic IPv6 header and the IPv6 extension headers. Header Format The following figure shows the elements that appear in the IPv6 header and the order in which the elements appear.

IPv6 is using two distinct types of headers: Main/Regular IPv6 Header and IPv6 Extension Headers. The main IPv6 header is equivalent to the basic IPv4 one despite some field differences that are the result of lessons learned from operating IPv4. Any proposal to create or specify a new IPv6 extension header MUST include a detailed technical explanation of why no existing IPv6 extension header can be used in the document proposing the new IPv6 extension header.

Instead, the options field is one of the possible next headers pointed to from within the IPv6 header. That is, just as TCP or UDP protocol headers can be the next header within an IP packet, so too can an options field. The removal of the options field results in a fixed-length, 40-byte IP header. The wonder of IPv6 lies in its header. An IPv6 address is 4 times larger than IPv4, but surprisingly, the header of an IPv6 address is only 2 times larger than that of IPv4.

Download this article in .PDF format. If you are using Internet or almost any computer network you will likely using IPv4 packets. IPv4 uses 32-bit source and destination address fields. Rob Blokzijl . RIPE NCC Roundtable Meeting , 16 February 2009, Amsterdam . http://www.ripe.net 1 IPv4 Header vs IPv6 Header

Any proposal to create or specify a new IPv6 extension header MUST include a detailed technical explanation of why no existing IPv6 extension header can be used in the document proposing the new IPv6 extension header. IP Datagram General Format (Page 1 of 3) The IPv4 datagram is conceptually divided into two pieces: the header and the payload. The header contains addressing and control fields, while the payload carries the actual data to be sent over the internetwork. Unlike some message formats, IP datagrams do not have a footer following the payload. Even though IP is a relatively simple

IP Header. Protocol Version(4 bits): This is the first field in the protocol header. This field occupies 4 bits. This signifies the current IP protocol version being used. Options integrated in header fields Options supported with extensions headers (simpler header format) Figures 1 and 2 compare the header of a IPv4 packet and an IPv6 packet. Even if you don’t study packet header fields, you can see the difference between the IPv4 header (fragmentation fields are . italicized) and the “streamlined” IPv6 header. Note the reduction in header fields in the

Download this article in .PDF format. If you are using Internet or almost any computer network you will likely using IPv4 packets. IPv4 uses 32-bit source and destination address fields. The IPv6 protocol defines a set of headers, including the basic IPv6 header and the IPv6 extension headers. Header Format The following figure shows the elements that appear in the IPv6 header and the order in which the elements appear.

Rob Blokzijl . RIPE NCC Roundtable Meeting , 16 February 2009, Amsterdam . http://www.ripe.net 1 IPv4 Header vs IPv6 Header field in IPv6), the IPv4 header checksum needed to be recomputed at every router. As with fragmentation and reassembly, this too was a costly operation in IPv4. Options .

Download this article in .PDF format. If you are using Internet or almost any computer network you will likely using IPv4 packets. IPv4 uses 32-bit source and destination address fields. An IP address (IPv4) is a 32-bit sequence of ones and zeros.To make the IP address easier to work with, it is usually written as four decimal numbers separated by periods. For example, an IP address of one computer is 192.168.1.2. Another computer might have the address 128.10.2.1. This is called the dotted decimal format. Each part of the address is called an octet because it is made up of

The IPv6 protocol defines a set of headers, including the basic IPv6 header and the IPv6 extension headers. Header Format The following figure shows the elements that appear in the IPv6 header and the order in which the elements appear. RFC5308 adds IPv6 address family support to IS-IS RFC5120 defines Multi-Topology concept for IS-IS Permits IPv4 and IPv6 topologies which are not identical

Instead, the options field is one of the possible next headers pointed to from within the IPv6 header. That is, just as TCP or UDP protocol headers can be the next header within an IP packet, so too can an options field. The removal of the options field results in a fixed-length, 40-byte IP header. – IPv6 should keep most of the characteristics of IPv4 (good design) – Changing the address fields is the big thing with IPv6 – While modifying the header, improvements have been introduced

The IPv6 header format is similar to IPv4 header fields. Even though IPv6 addresses are four times longer Even though IPv6 addresses are four times longer than IPv4 addresses, the IPv6 header is only twice the size of the IPv4 header. as an EtherType, and the use of the new frame format. This is now supported in the IEEE This is now supported in the IEEE 802 protocols using the SNAP header.

IPv6 is using two distinct types of headers: Main/Regular IPv6 Header and IPv6 Extension Headers. The main IPv6 header is equivalent to the basic IPv4 one despite some field differences that are the result of lessons learned from operating IPv4. Any proposal to create or specify a new IPv6 extension header MUST include a detailed technical explanation of why no existing IPv6 extension header can be used in the document proposing the new IPv6 extension header.

Cisco Self-Study Implementing Cisco IPv6 Networks (IPV6. An example of a logical interface is a “tunnel” interface that is used to send IPv6 packets across an IPv4 network by encapsulating the IPv6 packet inside an IPv4 header. Address An identifier that can be used as the source or destination of IPv6 packets that is assigned at the IPv6 layer to …, The wonder of IPv6 lies in its header. An IPv6 address is 4 times larger than IPv4, but surprisingly, the header of an IPv6 address is only 2 times larger than that of IPv4..

IPv4 and IPv6 address formats IBM - United States

ipv6 header format explanation pdf

IPv6 Extension Headers Review and Considerations [IP. • The size of IPv6 header is much bigger than that of IPv4 header, because of IPv6 address size. IPv4 addresses are 32bit binary numbers and IPv6 addresses are 128 bit binary numbers . • In IPv4 header , the source and destination IPv4 addresses are 32 bit binary numbers ., An example of a logical interface is a “tunnel” interface that is used to send IPv6 packets across an IPv4 network by encapsulating the IPv6 packet inside an IPv4 header. Address An identifier that can be used as the source or destination of IPv6 packets that is assigned at the IPv6 layer to ….

Understanding the IPv6 Header Microsoft Press Store

ipv6 header format explanation pdf

Management Changes in IPv6 share.confex.com. IPv6 (Internet Protocol Version 6) is the latest level of the Internet Protocol (IP) and is now included as part of IP support in many products including the major computer operating systems. IPv6 (Internet Protocol Version 6) is the latest level of the Internet Protocol (IP) and is now included as part of IP support in many products including the major computer operating systems..

ipv6 header format explanation pdf


Introduction to IPv6 Protocol Structure Rocky Mountain IPv6 Summit April 21 – 22, 2009 John Spence spence@commandinformation.com www.commandinformation.com AN IPV6 ROUTER OPTIMIZATION. The interpretation of the Header Extension Length field in the Hop-by-Hop Options header is another example of how the designers of IPv6 wanted to optimize processing of IPv6 packets at intermediate routers.

Networking 4 Voice and Video over IP (VVoIP) IEEE 802.2/3 Frame format Switches and the Datalink layer Network Layer Functions IPv6 introduction Transport Layer Functions Encapsulation / De-encapsulation o Running time = 14m 49s o Quizzes = 3m (average) o Total = 17m 49s TCP/IP Networks This module explains how TCP/IP networks work by describing the functionality of each TCP/IP … TIME WAIT Problems with closed socket - What if nal ack is lost in the network? - What if the same port pair is immediately reused for a new connection?

• The size of IPv6 header is much bigger than that of IPv4 header, because of IPv6 address size. IPv4 addresses are 32bit binary numbers and IPv6 addresses are 128 bit binary numbers . • In IPv4 header , the source and destination IPv4 addresses are 32 bit binary numbers . TIME WAIT Problems with closed socket - What if nal ack is lost in the network? - What if the same port pair is immediately reused for a new connection?

What is the difference between IPv4 and IPv6 Headers? IPv4 is the fourth version of the Internet Protocol and IPv6 is the successor of IPv6. The most important difference between these two is the size of address space. IPv4 allows only 32 bit source and destination addresses, whereas IPv6 allows 128 bit source and destination addresses. This makes the address space of IPv4 4.3×10 9 (2 32) and Before learning IPv6 datagram header and fields, I recommend you to learn IPv4 datagram header the different fields in IPv4 datagram header also. IPv6 Datagram Packet Structure IPv6 has a much simpler packet header compared with IPv4 , by including only the information needed for forwarding the IP …

Features of IPv6 • Simplified header format – Some IPv4 fields dropped or made optional – IPv6 packet header only twice the size of v4 header, even though address is four times a v4 address IPv4 Header = 20 bytes Source Address 32 bits Destination Address 32 bits IPv6 Header = 40 bytes Source Address 128 bits Destination Address 128 bits. Features of IPv6 • Extension headers 23/02/2011 · Business Service Management for Performance IPv6 Header 3 IPv4 header is 20 bytes : IPv6 header is 40 bytes . Address increased from 32 to 128 bits

Networking 4 Voice and Video over IP (VVoIP) IEEE 802.2/3 Frame format Switches and the Datalink layer Network Layer Functions IPv6 introduction Transport Layer Functions Encapsulation / De-encapsulation o Running time = 14m 49s o Quizzes = 3m (average) o Total = 17m 49s TCP/IP Networks This module explains how TCP/IP networks work by describing the functionality of each TCP/IP … some explanation is needed. So the header has all sorts of information. In the kernel, TCP header is accessed by pointer the sk_buff (stands for socket buffer). The sk_buff is probably the most important structure in the networking of the kernel. The sk_buff is essentially the

RFC 2460 IPv6 Specification December 1998 The exception referred to in the preceding paragraph is the Hop-by-Hop Options header, which carries information that must be examined The IPv6 header format is similar to IPv4 header fields. Even though IPv6 addresses are four times longer Even though IPv6 addresses are four times longer than IPv4 addresses, the IPv6 header is only twice the size of the IPv4 header.

Rob Blokzijl . RIPE NCC Roundtable Meeting , 16 February 2009, Amsterdam . http://www.ripe.net 1 IPv4 Header vs IPv6 Header IPv6 (Internet Protocol Version 6) is the latest level of the Internet Protocol (IP) and is now included as part of IP support in many products including the major computer operating systems.

IPv4 and IPv6 address formats Octets or segments, or a combination of both, make up Internet Protocol version 4 (IPv4) and Internet Protocol version 6 (IPv6) addresses. An IPv4 address has the following format… IPv6 extension headers are optional headers that may follow the basic IPv6 header. Several types of extension headers are defined in RFC 2460, Internet Protocol, Version 6 (IPv6) Specification . One IPv6 packet may include zero, one, or multiple extension headers.

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