Iljitsch van Beijnum wrote:
IPv4 over it where needed as soon as the necessary mechanisms (IPv4-in-IPv6 tunneling, IPv6 DNS resolver discovery) are available and all the hardware can handle IPv6 in the fast path. (I had a few conversations with vendors at the summit thing last week and many still do IPv6 in software.)
IPv6 flows are identified by the 3-tuple of (src, dst, flow_id), i.e., there are 128+128+20=276 bits needed for handling IPv6 in the fast path. Is anyone making CAMs that wide?