I don’t see any packet coming from 192.168.13.31 from your wireshark log captured in PC.
Btw, your fx30 is having ip address 192.168.13.31, then why are you ping yourself but not pc?
Didn’t you should " ping192.168.13.1 -I eth0" in module?
Have you captured the wireshark log in FX30?
View pings sent from an external device to mangoh red - #3 by Cada