I foresee things breaking in one of two ways:
1) ISPs try to adopt IPv6 before they have ironed out all the kinks regarding their network topology, and things break
2) ISPs start to nat their customers (your cable modem now has a 10.x.x.x IP address), and things break
The amount of breakage will (hopefully) be spread out enough that the majority of non-web traffic continues to work, but the desire to sign up new customers will put a strain on things.
-Terry
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"so listen up boy, or pornography starring your mother will be the second worst thing to happen to you today"
TF2: Spy
1) ISPs try to adopt IPv6 before they have ironed out all the kinks regarding their network topology, and things break
2) ISPs start to nat their customers (your cable modem now has a 10.x.x.x IP address), and things break
The amount of breakage will (hopefully) be spread out enough that the majority of non-web traffic continues to work, but the desire to sign up new customers will put a strain on things.
-Terry
-----
"so listen up boy, or pornography starring your mother will be the second worst thing to happen to you today"
TF2: Spy