Unformatted text preview: x, cumberso me, and expensive to administer.S. Shankland, “Go o gle Tries to Break IP v6
Lo gjam by Own Example,” CNET, March 27, 2009. The o nly lo ng-term so lutio n is to shif t to a new IP scheme. Fo rtunately, o ne was develo ped
mo re than a decade ago . IP v6 increases the po ssible address space f ro m the 232
(4,294,967,296) addresses used in the current system (called IP v4) to a new theo retical limit o f
2128 addresses, which is a really big number—bigger than 34 with 37 zero s af ter it. That’s mo re
IP v6 addresses than there are gains o f sand o n the earth.V. Ko pyto f f , “Happy IP v6 Day,” New
Yo rk Times, June 8, 2011. But no t all the news is go o d. Unf o rtunately, IP v6 isn’t backward co mpatible with IP v4, and the
transitio n to the new standard has been painf ully slo w. This gives us the equivalent o f many
islands o f IP v6 in a sea o f IP v4, with translatio n between the two schemes happening when
these netwo rks co me to gether. Others co nsider it the equivalent o f two Internets with a
translatio n bridge between IP v4 and IP v6 (and that bridge intro duces a delay).M. P eckham,
“Wo rld IP v6 Launch: Only The Biggest Change to the Internet Since Inceptio n,” Time, June 6,
2012. While mo st mo dern hardware and o perating systems pro viders no w suppo rt IP v6,
co nverting a netwo rk to IP v6 currently invo lves a lo t o f co st with little sho rt-term benef it.S.
Shankland, “Go o gle Tries to Break IP v6 Lo gjam by Own Example,” CNET, March 27, 2009.
Upgrading may take years.B. Arno ldy, “IP Address Sho rtage to Limit Internet Access,” USA
To day, August 3, 2007. So me o rganizatio ns have stepped up to try to hasten the transitio n. Facebo o k, Go o gle,
Micro so f t, Yaho o !, and so me o f the Internet’s largest netwo rks have made mo st o f its services
IP v6 accessible, the U.S. go vernment has mandated IP v6 suppo rt f o r mo st agencies, China has
spurred co nversio n within its bo rders, and Co mcast and Verizo n h...
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