Mark Andrews wrote:
A major design flaw of IPv6 is half hearted support for multihoming
with multiple addresses by broken address selection architecture,
which causes a lot of operational problems, which is partly why
IPv6 is unusable.
Disabling 6to4 and/or improving applications may work for some
faulty cases, but it's not enough at all.
The next step is to make multi-homed clients also work well.
A problem is that RFC2374 was thrown away and the current address
assignment procedure is broken to promote multihoming with routing,
which means people won't use multihoming with multiple IPv6
Thus, you can't expect proper support for hosts with two (IPv4 and
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