In your previous mail you wrote: My context is IPsec in the Internet, which excludes VPNs. => this is a bit unfair: VPNs are the natural model for IPsec use (putting back an uniform I could talk about red and black :-). Do you know some major application over the Internet using IPsec with transport mode? Regards Francis.Dupont@xxxxxxxxxx _______________________________________________ Ietf mailing list Ietf@xxxxxxxx https://www.ietf.org/mailman/listinfo/ietf