Slate 21 Pro - Obtains IP address but no Internet connectivity

Hi all,
I have a Slate 21 Pro with no internet connectivity at home. The device obtains an IP address via DHCP on either wired or wireless networks, but when attempting to browse or access internet-based resources, it simply times out. I've also tried manual IP address assignment with no success. If I take the tablet to a local wi-fi cafe, it connects fine, but I can't get it to work at home. My ISP is Baja Broadband, a 50MB/5MB cable connection Local network details below:
* Arris T822G cable modem - ISP-provided, no routing or firewall capability, just a plain old modem
* Cisco/Linksys E3000 wi-fi router - internal network gets NAT'ed here. no filtering, nothing fancy
* Netgear 24-port managed gigabit switch
I've tried bypassing the internal network and connecting the Slate 21 Pro directly to the cable modem via wired Ethernet. Same problem - it obtains an IP address (a public IP in this case) but will not connect to any internet sites. HP sent me a replacement unit which displays the exact same problem. Both units work fine at the wi-fi cafe.
(OS is Android 4.3 Jelly Bean. I could take the unit to the wi-fi cafe and see if there's any OTA updates available if anyone thinks that might help.)
I'm a network engineer with 25 years IT experience. My home network is a mature network with no known problems. Connected to this network and functioning perfectly are: 2 iPhones, a Roku box, an LG smart TV, 2 Macs, 4 Windows PCs. Previously had 2 HP Touch tablets which were also fine. Home visitors are able to connect their phones and tablets to our wi-fi with no problems. It's *just* the Slate 21 Pro which is misbehaving.
I'm stumped. Any ideas?
Thanks,
Steve
This question was solved.
View Solution.

UPDATE: This is resolved. I discovered I was able to access Internet sites by IP address but not by hostname. There was something wonky with the ISP-provided DNS server. Once I substituted a different DNS server in the IP config, it works.
Weird!

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