[CentOS] Network conections problems

[Kahlil Hodgson]

First guess is that you may have two devices on the network with the
same ip address.

Next time this happens, try doing

1. 'arp -n' from a machine other than the db server
2. ping the other machine from the db server, then
3. 'arp -n' from the other machine

Compare the outputs of the two invocations of arp. If the outputs show
different MAC addresses for 192.168.41.4 then you have two different
devices with the same IP address.