Disabling ipv6

[Richard Sewill]

I turned on IPv6 in my router.

I am still getting 6to4 Tunnel from my ISP.

Netflix is currently streaming so my network is not idle.

I tried ping and ping6 anyway.  This is NOT on an idle network.

rsewill at localhost:~ <3:3> $ ping www.google.com
PING www.google.com (74.125.227.146) 56(84) bytes of data.
64 bytes from dfw06s17-in-f18.1e100.net (74.125.227.146): icmp_seq=1 ttl=52
time=46.0 ms
64 bytes from dfw06s17-in-f18.1e100.net (74.125.227.146): icmp_seq=2 ttl=52
time=45.6 ms
64 bytes from dfw06s17-in-f18.1e100.net (74.125.227.146): icmp_seq=3 ttl=52
time=50.1 ms
64 bytes from dfw06s17-in-f18.1e100.net (74.125.227.146): icmp_seq=4 ttl=52
time=44.9 ms
64 bytes from dfw06s17-in-f18.1e100.net (74.125.227.146): icmp_seq=5 ttl=52
time=62.3 ms
^C
--- www.google.com ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4006ms
rtt min/avg/max/mdev = 44.947/49.834/62.398/6.538 ms
rsewill at localhost:~ <3:3> $ ping6 www.google.com
PING www.google.com(dfw06s17-in-x10.1e100.net) 56 data bytes
64 bytes from dfw06s17-in-x10.1e100.net: icmp_seq=1 ttl=54 time=119 ms
64 bytes from dfw06s17-in-x10.1e100.net: icmp_seq=2 ttl=54 time=120 ms
64 bytes from dfw06s17-in-x10.1e100.net: icmp_seq=3 ttl=54 time=121 ms
64 bytes from dfw06s17-in-x10.1e100.net: icmp_seq=4 ttl=54 time=117 ms
64 bytes from dfw06s17-in-x10.1e100.net: icmp_seq=5 ttl=54 time=117 ms
64 bytes from dfw06s17-in-x10.1e100.net: icmp_seq=6 ttl=54 time=119 ms
^C
--- www.google.com ping statistics ---
7 packets transmitted, 6 received, 14% packet loss, time 6002ms
rtt min/avg/max/mdev = 117.395/119.257/121.898/1.636 ms

There remains a performance penalty when using IPv6.
As another pointed out, this is because of the path the packet is routed.

I trust Linux when I turn on IPv6.  I can turn off most services and have
the firewall on.

I don't know if I trust the Apple Mac or Windows when I turn on IPv6.

Given the ISP is handing out 6to4 tunneling, I still think the ISP support
is "sort of not there".

My router has some IPv6 stuff in it.  It has enough to turn on and use IPv6.
My router is missing reporting stuff I would expect to find for IPv6.
My router has a screen that reports attached devices and reports IPv4
stuff, not IPv6 stuff.
I would say my router still needs some stuff to be IPv6 friendly.

I apologize for my earlier top postings.  I use gmail and it likes to top
post.

I am guessing, please correct me if I am wrong, IPv4 will be used in
preference to IPv6, when both are available.

I am curious.  Is there any recommended equivalent of speedtest.net for
IPv6?

I have mixed feelings about disabling IPv6 or leaving IPv6 enabled.
Each person must make this decision, on their own.
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