F16: is there a relationship between ipv6 and sound?

[ccchen]

I have fedora 16. All is well. So this morning, after reading my tcpdump, I decided to disable ipv6 by adding:

/etc/sysctl.conf: net.ipv6.conf.all.disable_ipv6 = 1

Sure enough, ipv6's traffic went away, and my eth0 and lo are no longer configured for inet6. Then my sound went away. I didn't want to believe it! So, I enabled/disabled it a couple more times. The result is the same--no ipv6 meant no sound.

Then I thought, how about disabling just eth0, and keep lo:

/etc/sysctl.conf:net.ipv6.conf.eth0.disable_ipv6 = 1

The sound came back.

Is there any relationship between ipv6 and sound?

Thx.