Hi, In IPv4, OpenSSH sets the Type of Service (ToS) / DSCP field appropriately, e.g. "low delay" for interactive connections. In IPv6, however, the Traffic Class field is apparently left set to zero for all packets. Is there a reason for this? My understanding is that it would be valid to set the IPv6 Traffic Class identically to the IPv4 ToS field. In a bug report to Debian (http://bugs.debian.org/498297), Lionel Elie Mamane posted a patch to do just this. If this is acceptable, I'd love to see this incorporated into OpenSSH. Thanks. (Please CC me on replies.) -- Malcolm Scott