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Ticket Resolution Summary Owner Reporter
#1223 fixed DHCP/connectivity problem via switches in code lounge? llynch@… dave@…
Description

Hi NOC folks,

During the past 20 minutes in the code lounge, I'm not getting DHCP responses on my mac when plugged into the wired switches, e.g., SW-144, so my machine is choosing to use a link-local address and has no gateway.

I've also tried changing to other access ports and another switch: SW-148.

Please help! :)

#595 fixed DNS Negative Caching? bzeeb+ietf@… Jason_Livingood@…
Description
Hi – Can you check behavior of the resolvers for the name techfund.comcast.com? It should return a CNAME and then that resolves an A record:

dhcp-16f4:~ jason$ dig techfund.comcast.com

; <<>> DiG 9.8.3-P1 <<>> techfund.comcast.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 33385
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;techfund.comcast.com. IN A

;; AUTHORITY SECTION:
comcast.com. 2084 IN SOA dns101.comcast.net. domregtech.comcastonline.com. 2009085610 7200 3600 1209600 3600

;; Query time: 1 msec
;; SERVER: 130.129.5.6#53(130.129.5.6)
;; WHEN: Mon Mar 11 14:40:49 2013
;; MSG SIZE  rcvd: 117

dhcp-16f4:~ jason$ dig techfund.comcast.com @8.8.8.8

; <<>> DiG 9.8.3-P1 <<>> techfund.comcast.com @8.8.8.8
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 46171
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;techfund.comcast.com. IN A

;; ANSWER SECTION:
techfund.comcast.com. 2581 IN CNAME grants.g.comcast.net.
grants.g.comcast.net. 15 IN A 69.252.208.135

;; Query time: 23 msec
;; SERVER: 8.8.8.8#53(8.8.8.8)
;; WHEN: Mon Mar 11 14:41:00 2013
;; MSG SIZE  rcvd: 88
#1044 worksforme DNS on v6-only networks hak@… Michael.Bishop@…
Description
When I connect to the v6only or nat64 networks, I'm not seeing any DNS servers configured using Windows 10.  What mechanism is being used to configure the DNS servers on clients?
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