Only time will tell if things will continue to work (Hopefully its still up and running tomorrow)
If anyone else want to test this as well, please do and report back here so that I can make a permanent fix
ssh into the core, and enter the following into the terminal:
echo net.ipv4.conf.all.arp_filter = 1 | sudo tee -a /etc/sysctl.conf
echo net.ipv4.conf.default.arp_filter = 1 | sudo tee -a /etc/sysctl.conf
then reboot the core. While the core is rebooting, unplug the power from your foscam then plug it back in (just in case)
When the core comes back up, hopefully your foscam will continue to work
Cross your fingers!