Connection following during network reconfiguration

A system for providing reconfigurable access to computing resources, the system comprising a processor and memory, the system configured to:

• establish a first connection to an IP address on a first network using a first IP address corresponding to a first virtual machine instance;
• receive a request to remap the IP address on the first network to an IP address corresponding to a second virtual machine instance;
• in response to receiving the request to remap the IP address on the first network, establish a tunnel between the first and second virtual machine instances;
• track existing connections to the IP address on the first network;
• in response to receiving a packet from the first network containing a request to initiate a second connection to the IP address on the first network, establish the second connection using the second virtual machine instance and translate subsequent packets associated with the IP address on the first network to the IP address corresponding to the second virtual machine instance;
• and
• based at least in part of said tracking, forward, via the tunnel, subsequent packets associated with the first connection to the first virtual machine instance.