I have been moving from another CentOS server to DigitalOcean. I had a software package working on the other server, and it fails on a socket bind: bind() is returning EADDRNOTAVAIL for the machine's ip address, 91.237.88.XXX ( x'd out the last subnet for security ).

I have been talking to the software package vendor and they did detailed error analysis to find this socket failure. As I mentioned, another server with CentOS 6.4 works. My droplet CentOS is 6.5, and that is the only difference. The software builds on CentOS 6.5 without error, but fails to open the socket. Tech support thinks it is the VPS environment at Digital Ocean.