The question, should IPv6, be disabled by default, is asked of people of the user list.
At the moment, I am on the fence.
Is there a compromise where, during the Fedora install, when the person is asked for some network information and asked for time zone and root password, can the question be posed asking the initial state of IPv6?
Can a "help" entry be created that will explain why one will want IPv6 enabled and why one will not want IPv6 enabled?
If I have to jump off the fence, my answer would be, I believe the default should be enabled.
I have a router protecting my home network, where I can turn on/turn off IPv6.
As I indicated in another post, I believe my router is starting to support IPv6, but am not sure how well my router supports IPv6 yet. My router supports IPv6 traffic flow.
It is unclear how well my router's firewall works for IPv6. My router, for IPv4, does firewall and NAT (or as one person posted, and I liked his comment--NAT is firewall plus mangling). My router's default setting for IPv6 is disabled.
When the router vendor is willing to provide a firmware upgrade with IPv6 enabled, that will be a signal the router vendor has more confidence in his router implementation, including his firewall implementation, for IPv6.
When the ISP no longer uses 6to4 tunnel, that will be a signal the ISP is moving to provide full support for IPv6.
As an interesting side note, I went to http://ipv6-test.com/speedtest/ to compare the throughput for IPv4 and IPv6. It matters greatly which server I select. When I selected the Netherlands - Zeeland server, The IPv4 and IPv6 performance were close enough to being the same for me to say there was no performance loss going from IPv4 to IPv6.
When I tried another server, IPv6 was faster. When I tried still another server, IPv4 was faster. As another person commented in the other post, the path through which the packets travel matters.
The speed test results pleased me. The speed test results told me my ISP is trying to give me the downstream/upstream performance I am paying for be it IPv4 or IPv6.
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