Tunneling in the context of migrating from IPv4 to IPv6 refers to the technique of encapsulating IPv6 packets within IPv4 packets to facilitate communication between IPv6 networks over existing IPv4 infrastructure. This allows organizations to gradually transition to IPv6 without needing to replace all their IPv4 equipment immediately. Tunneling can be implemented using various protocols, such as 6to4 or Teredo, enabling interoperability between the two IP versions during the transition period.
tunneling
There are a number of technologies that can provide IPv6 translation for IPv4 users, most commonly Dual Stack and 6 to 4 tunneling. DUAL STACK involves running both IPv4 and IPv6 on a single router with the router managing the implementation of either protocol as and when necessary. 6 to 4 tunneling encapsulates an IPv6 frame in and IPv4 frame for tansport over an IPv4 network either to its destination address or a network where the IPv4 frame can be discarded.
option 3 dynamic 6to4 tunneling. not 100% but like 80% but you can pray for answer
Teredo tunneling is a computer networking term that gives IPv6 capabilities to servers that are still using IPv4. It can only be used when they have no other connections to IPv6 sites.
When tunneling IPv6 over IPv4, the overhead primarily consists of the additional IPv4 header and any encapsulation overhead. An IPv4 header is typically 20 bytes, while an IPv6 header is 40 bytes. Thus, the total overhead for tunneling one IPv6 packet over IPv4 would be 20 bytes, resulting in a total packet size increase of 20 bytes for every IPv6 packet transmitted. This additional overhead may impact performance, especially in networks with high traffic or limited bandwidth.
IPv4 Mechanisms
32 bits in a IPv4 address
32 bits (for IPv4), or 128 bits (for IPv6).32 bits (for IPv4), or 128 bits (for IPv6).32 bits (for IPv4), or 128 bits (for IPv6).32 bits (for IPv4), or 128 bits (for IPv6).
IPv4 was described in RFC 791 in September 1981.
IPV4 is a kind of IP Address.
Minimal bytes required in IPv4 header are 20 i.e. 20 bytes are mandatory. And total bytes in IPv4 header are 60.
While IPv6 is based on IPv4, it is superior. The main characteristic that shows its enhancement over IPv4 is that it processes faster.