Hi! I just found that KDE3 does not support IPv6.
knemo shows an interface as not connected if it has only IPv6 protocol. Kconnections shows only IPv4 connections.
That may be the case, especially since knemo etc. are add-on programs and not part of the Trinity core. IIRC, knemo in particular directly accesses the kernel socket devices to grab information; it may not know how to interpret the IPv6 data.
Compounding this problem is that many people (myself included) use IPv4 exclusively and do not have any IPv6 equipment set up for testing.
Tim