I don't think it's the fundamental reason but the checksum doesn't need to be recomputed at every stem, which used to be touted as a major advantage. (I imagin

I don't think it's the fundamental reason but the checksum doesn't need to be recomputed at every stem, which used to be touted as a major advantage. (I imagine processing power at the router level is cheap enough now that this is no longer a concern, even for ten-gigabit links.) http://ipv6.com/articles/general/Top-10-Features-that-make-IPv6-greater-than-IPv4-Part4.htm http://ipv6.com/articles/general/Top-10-Features-that-make-I...