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Back in the saddle again
Join Date: Oct 2001
Location: Central TX west of Houston
Posts: 56,708
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4.2.2.2 is just a random easy to remember ip that network folks use for troubleshooting. 4.2.2.3 is also a DNS server.
perform tracert to the 4.2.2.2, and also perform a ping to whatever the second hop is. That should be the gateway at the ISP. The 192.168.15.1 address will almost certainly not be the problem.
It is possible for your DNS to be hijacked but it probably wouldn't be intermittent.
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