Suppose an IPv6 router wants to forward a v6 datagram to another IPv6 router, but they are connected via intervening IPv4 routers using tunneling. Then A. The sending IPv6 router creates one or more IPv6 fragments, which size is smaller than the maximum size of an IPv4 datagram. B. The sending IPv6 router creates an IPv4 datagram and puts it in the data field of an IPv6 datagram. C. The sending IPv6 router creates an IPv4 packet and puts the v6 datagram as data payload for the IPv4 packet.

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a  social news website  is an  internet  website  that features  user-posted stories. such stories are ranked based on popularity, as voted on by other users of the site or by website administrators. users typically comment online on the news posts and these comments may also be ranked in popularity. since their emergence with the birth of  web 2.0, social news sites have been used to link many types of information, including news, humor, support, and discussion. all such websites allow the users to submit content and each site differs in how the content is moderated. on the  slashdot  and  fark  websites,  administrators  decide which articles are selected for the front page. on  reddit  and  digg, the articles that get the most votes from the community of users will make it to the front page. many social news websites also feature an online comment system, where users discuss the issues raised in an article. some of these sites have also applied their voting system to the comments, so that the most popular comments are displayed first. some social news websites also have a  social networking  function, in that users can set up a user profile and follow other users' online activity on the website.