On 02/08/2016 08:20 PM, Phillip Hallam-Baker wrote: > On Mon, Feb 8, 2016 at 5:39 PM, Carsten Bormann <cabo@xxxxxxx> wrote: >> Ronald Bonica wrote: >>> The words "many" and "some" don't do justice to the conversation. https://tools.ietf.org/html/draft-ietf-v6ops-ipv6-ehs-in-real-world-02 provides more concrete numbers from real-world observation. >> >> Ah, but the result is much simpler. >> >> Some other real world data (Google QUIC experiments) already tell us >> that a sizable part of the Internet (was it 7 %?) is not reachable via >> UDP at all. This just ups that number slightly for IPv6 and UDP >> protocols that don't have their own segmentation. >> >> UDP, it was nice to have known you. > > Maybe what we needed all along was a better TCP that allowed data to > be sent on the first packet. FWIW, TCP does allow you to send data in the SYN. However, it's not friendly with DoS mitigatons such as SYN-cookies. Thanks! Cheers, -- Fernando Gont SI6 Networks e-mail: fgont@xxxxxxxxxxxxxxx PGP Fingerprint: 6666 31C6 D484 63B2 8FB1 E3C4 AE25 0D55 1D4E 7492