As we seem to be moving toward an adoption of IPv6 sooner or later, I find myself wondering what the impact - if any - will be on VoIP.  After all, VoIP has been a major driving force over the past 10 years, and we've pretty much accepted the additional overhead that is incurred - at least with UDP and IPv4.

And I can see at least two approaches to this question.

On the positive side, IPv6 will add a lot of additional controls for prioritization, etc., that should make VoIP "better."  And the increased address space should be an advantage.

At the same time, voice packets are very small (for all of the obvious reasons).  Generally, they're significantly less than 64 octets (bytes) for the payload itself.  So we take that and add a UDP header and an IPv4 header and we're already extremely heavy in overhead.

Now IPv6 comes along and at least doubles the size of the header.  Are we nearing a point where each diamond ring gets shipped in a railroad car?  Does it matter?

Looking forward to your thoughts!