That was 2014 MPLS was an old (and widely deployed) protocol by then and is sourceless even in mp2p applications. Stewart > On 4 Jan 2023, at 21:24, Brian E Carpenter <brian.e.carpenter@xxxxxxxxx> wrote: > > Credit where it's due: Sourceless Network Architecture was described many years ago: > > https://www.cl.cam.ac.uk/techreports/UCAM-CL-TR-849.pdf > > Regards > Brian > > On 04-Jan-23 22:35, George Michaelson wrote: >> Put a nonce source ip in the packet header and the real source as 4-16 bytes of PFS protected payload. >> Use asymmetric routing. A single point of capture which isn't close to source or destination is occluded. >> Can't fix a warrant tap, but can at least obfuscate for on-path. >> G >