[CentOS] System drops off network after a few minutes

>is this using DHCP or static IP ?

DHCP

>are there any events related to networking at the end of the `dmesg`
>output right after it bonks ?

Darn, never looked there (my bad). I will get it up again this weekend and attempt the wireshark dump and make sure I save the dmesg log.

Thanks!
jlc