I am seeing this very strange problem on my network where people suddenly cant log in on the domain. after I log in as local admin and go to network adapter setting, properties, IP is set to automatic but it shows a default gateway number grayed out. I click the box to put an IP address in manually then immediately switch it back to automatic and the grey gateway number goes away and all is fine. This just started happening this week and only to about 10 people. I looked on the DHCP server and all the settings seem fine.
The actual gateway is 10.0.8.1
the server 10.0.8.3
The strange assigned grey gateway is 10.0.8.2
Pinging 10.0.8.2 gets no reply.
nothing on the server in the dhcp setting shows a 10.0.8.2 number.
Any ideas?