Hello,
From what device are you trying to ping? What device are you trying to reach? What are the IP addresses of those devices?
Please, make sure that the PC is not on the same network as the other sites. If you have a PC connected to RUT, try pinging with a source IP specified. For example, if you try to ping a device in the 192.168.3.0/24 network from a PC in the 192.168.2.0/24 network:
# check IP address
ipconfig
#ping with source
ping 192.168.3.100 -S 192.168.2.50
Also, please take a look at this post here.
Kind Regards,