Network problems can be complex. If these suggestions are not right I can change the answer later if other solutions present themselves.
If you are connecting two Ethernet devices directly you may need a cross over cable.
To test your connection with out using IP addresses, try to follow what is discussed in this answer this answer where the MAC address is used on a Ubuntu system instead of the IP address.
You also might try using wireshark to monitor the Ubuntu box's Ethernet port.
Network problems can be complex. If these suggestions are not right I can change the answer later if other solutions present themselves.
If you are connecting two Ethernet devices directly you may need a cross over cable.
To test your connection with out using IP addresses, try to follow what is discussed in this answer where the MAC address is used on a Ubuntu system instead of the IP address.
You also might try using wireshark to monitor the Ubuntu box's Ethernet port.
Network problems can be complex. If these suggestions are not right I can change the answer later if other solutions present themselves.
If you are connecting two Ethernet devices directly you may need a cross over cable.
To test your connection with out using IP addresses, try to follow what is discussed in this answer where the MAC address is used on a Ubuntu system instead of the IP address.
You also might try using wireshark to monitor the Ubuntu box's Ethernet port.
Network problems can be complex. If these suggestions are not right I can change the answer later if other solutions present themselves.
If you are connecting two Ethernet devices directly you may need a cross over cable.
To test your connection with out using IP addresses, try to follow what is discussed in this answer where the MAC address is used on a Ubuntu system instead of the IP address.
You also might try using wireshark to monitor the Ubuntu box's Ethernet port.