When updating the system time using rdate the connected time is changed by the same as the system time. i.e. 1) Connected time is 00:03 2) "rdate -s servername" adds 1:06 to the system time 3) connected time instantly changes to 01:09. Bug exists in version that came with RH 6.1 stock (1.0.0 I'm guessing) and in version 1.0.1
rp3 uses the difference between the current system time and the timestamp on the lock file created in /var/run to compute the amount of time the interface has been up. If the interface is brought up before rp3 is started, there is no other reference point rp3 can use to track the uptime for the interface, so changing rp3 to use an internal counter when an interface is brought up wouldn't help.