The Teredo protocol includes provisions for a sunset procedure: Teredo implementation should provide a way to stop using Teredo connectivity when IPv6 has matured and connectivity becomes available using a less brittle mechanism.

; Teredo client: A host which has IPv4 connectivity to the Internet from behind a NAT and uses the Teredo tunneling protocol to access the IPv6 Internet.

A Teredo server never forwards any traffic for the client ( apart from IPv6 pings ), and has therefore very modest bandwidth requirements ( a few hundred bits per second per client at most ), which allows a single server to support large numbers of clients.

Shipworm species comprise several genera, of which Teredo is the most commonly mentioned.

The Teredo protocol performs several functions:

Teredo defines several different kinds of nodes:

* Teredo wood, a form of fossilized wood showing marks of shipworm damage

Exchanging traffic between the two networks requires special translator gateways, but this is not generally required, since most computer operating systems and software implement both protocols for transparent access to both networks, either natively or using a tunneling protocol like 6to4, 6in4, or Teredo.

Some IPv6 addresses are reserved for special purposes, such as loopback, 6to4 tunneling, and Teredo tunneling.

Several Sea of Azov mollusks, such as shipworm ( Teredo navalis ), soft-shell clam ( Mya arernaria ), Mediterranean mussel ( Mytilus galloprovincialis ) and Anadara inaequivalvis, originate from the Black Sea.

Sometimes called " termites of the sea ", they also are known by the common name " Teredo worms " or simply " teredo ", from the Greek language " τερηδων ", via Latin.

Eventually biologists adopted the common name Teredo as the name for the best-known genus.

The best known species is Teredo navalis.

Historically, Teredo concentrations in the Caribbean Sea have been substantially higher than in most other salt water bodies.

Brunel is said to have been inspired in his design by the shell of the shipworm Teredo navalis, a mollusc whose efficiency at boring through submerged timber he observed while working in a shipyard.

In 1761 the Royal Navy clad the hull of the frigate HMS Alarm ( 1758 ) with copper sheet to reduce the growth of marine biofouling and prevent attack by the Teredo shipworm.

In computer networking, Teredo is a transition technology that gives full IPv6 connectivity for IPv6-capable hosts which are on the IPv4 Internet but which have no direct native connection to an IPv6 network.

Teredo operates using a platform independent tunneling protocol designed to provide IPv6 ( Internet Protocol version 6 ) connectivity by encapsulating IPv6 datagram packets within IPv4 User Datagram Protocol ( UDP ) packets.

Other Teredo nodes elsewhere called Teredo relays that have access to the IPv6 network then receive the packets, unencapsulate them, and route them on.

Teredo is designed as a last resort transition technology and is intended to be a temporary measure: in the long term, all IPv6 hosts should use native IPv6 connectivity.

Teredo should therefore be disabled when native IPv6 connectivity becomes available.

Teredo was developed by Christian Huitema at Microsoft, and was standardized in the IETF as RFC 4380.

The Teredo server listens on UDP port 3544.

Teredo alleviates this problem by encapsulating IPv6 packets within UDP / IPv4 datagrams, which most NATs can forward properly.

Thus, IPv6-aware hosts behind NATs can be used as Teredo tunnel endpoints even when they don't have a dedicated public IPv4 address.

In effect, a host implementing Teredo can gain IPv6 connectivity with no cooperation from the local network environment.

Teredo is intended to be a temporary measure: in the long term, all IPv6 hosts should use native IPv6 connectivity.

recently only Keith Wheeler's novel, Peaceable Lane, has openly faced the problem.

Until recently, art has withstood the pressure of chaotic things.

Kluckhohn recently has summarized evidence regarding changes in values during a period of years, primarily 1935-1955, but extending much farther back in some instances.

Communist guerrillas recently have been reported increasing their activities and the great flood of the Mekong River has interposed a new crisis.

The Transit Authority has recently placed in operation `` hold '' lights at BMT Thirty-ninth and Fifty-ninth Street stations in Brooklyn.

The state has recently undertaken liability insurance for drivers of state cars.

The author has recently studied the field of medical electronics and has been convinced that, in this area alone, the application of electronic equipment has enormous possibilities.

It has recently become practical to use the radio emission of the moon and planets as a new source of information about these bodies and their atmospheres.

A well-publicized entrant which has achieved success only recently is the built liquid detergent, with which the major problem today is incorporation of builder and active into a small volume using a sufficiently high builder/active ratio.

Oliver has recently used the second-level approach with the largest snakes, and has come to these conclusions: the anaconda reaches a length of at least 37 feet, the reticulate python 33, the African rock python 25, the amethystine python at least 22, the Indian python 20, and the boa constrictor 18-1/2.

In some countries the trend has gone further than others: Mexico, Panama, and Venezuela are displaying open sympathy for Castroism, and there is no country -- save the Dominican Republic whose funeral services we recently arranged -- where Castroism and Anti-Americanism does not prevent the government from unqualifiedly espousing the American cause.

And contrary to what has been said recently, we did not wait for `` outside pressures '' and `` world opinion '' to bring down that Communist government ; ;

Hengesbach, who has been living on welfare recently, said he hopes to rebuild the farm which was settled by his grandfather in Westphalia, 27 miles southwest of here.

Of another colleague, George Santayana, he could write: `` The great event in my life recently has been the reading of Santayana's book.

Mr. Kennan, who has recently abandoned authorship for a new round of diplomacy as the recently appointed American ambassador to Yugoslavia, is not the only man who finds it easier to portray the past than to prescribe for the future.

It was pleasant last night, therefore, to hear him do something else: a concerto he has recently recorded, `` The Emperor ''.

Herr Wangenheim has only recently become the city's music director, and is a young man with a clear flair for the podium.

But what has been happening recently might be described as creeping mannerism.

More recently, Alasdair MacIntyre has attempted to reform what he calls the Aristotelian tradition in a way that is anti-elitist and capable of disputing the claims of both liberals and Nietzscheans.

The aardvark has been known to sleep in a recently excavated ant nest, which also serves as protection from its predators.

More recently, it has extended those efforts to controls on conflict diamonds, the primary source of revenue for UNITA.