M998A1 wheel hub question

Hey all, I'm lost on this. I noticed that I had a leak at the front right wheel area, noticed a (what i though was a rubber brake line going into the top of the drive hub), The liquid was red also noticed that all 4 wheels have the same line going into the hub, power steering fluid was low so guess it was power steering fluid, but why does power steering fluid go to the hub whats the reason for it,

You possibly have a bad cooler loop in the transfer case and the transmission fluid is flooding the vent system (the hose you talk about)
So you could possibly have "contamination" in some or all of the hubs and differentials.
Check the fluid level in the TC and see if it is over full.

Drain the hubs and verify, it’s not uncommon to have trans fluid in the vent lines, it’s a known issue dues to venting of the Tcase and driving at hwy speeds.

thanks all, i'll check it this week