one machine on the domain has had the same static internal ip a long time, serving a couple small sites. All of a sudden internet connectivity is not available, although the LAN is. Switching to dhcp gets a new dynamic address which then works. Assigning that new ip as static continues to work, but trying to use the old static ip fails.
What should I look for as a cause? Windows updates have occurred, but nothing else that I see is changed at all in the firewall or in any configuration I have done.