Nope, no indication of bearing or seal issues at all.
The grease/dust cap is leaking, that is all. Jack the wheel up, take it off the wheel and the grease cap, clean it up, ensure that it is a good fit and replace it, but while you are there check for movement in the bearings and the cleanliness of the grease.
To do all of this, re grease, adjust the bearing pre load and put it all back together will take a beginner under an hour and someone experienced about 15 minutes.
A worthwhile job to be able to do at home or on the road and could save you some grief, not to mention a pile of money.
Cheers,
Peter

Being on the front of the wheel it would be from the dust cap, check that they are on properly Myself I jack up the van every 2 years take the bubs off wash out and check the bearings and seals and repack them with fresh top quality grease and I have never had problem with the wheel bearings while traveling. Just make sure that you do not over pack the wheels with too much grease as it will be forced out past the seals

 

To add to the above comments. Use a high temperature wheel bearing grease, I use Castrol HTB2, Penrite is another. After cleaning all old grease out of the bearing and hub fully pack grease into the bearing there is a tool that helps do this but by hand work the grease into all the rollers. Good idea to fit a new rear seal to the hub and then grease into the centre of the hub. When refitting the cap dont pack the cap with grease it will come out and make a mess anyway. Tighten the nut, fit and spin the wheel backoff the nut until the wheel spins freely fit the split pin you may have to back off the nut further very slightly to get the pin to align with the hole. Once all bearings have been regreased and wheels fitted take the van for a short run then jack up each wheel in turn and check for play in the bearing by pushing the wheel back and forward, there should be very little play if any. Once travelling on the road for half an hour check the temperature of each hub by placing your hand on it, it should be ambient temperature definately not hot. I do this at the start of every trip just to check all is well with the wheels before travelling to far out of range of home. Havent had a problem yet but if I did I havent got far to get home and fix any issue as well as peace of mind. You might be able to find a demo of the process on youtube.