It has now gotten even worse; it’s no longer just a problem with the transparent DNS; the transparent proxying is also not working for these workstations:
user@host:~$ ping 10.152.152.10
PING 10.152.152.10 (10.152.152.10) 56(84) bytes of data.
64 bytes from 10.152.152.10: icmp_seq=1 ttl=64 time=0.240 ms
64 bytes from 10.152.152.10: icmp_seq=2 ttl=64 time=0.226 ms
64 bytes from 10.152.152.10: icmp_seq=3 ttl=64 time=0.223 ms
^C
--- 10.152.152.10 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 1999ms
rtt min/avg/max/mdev = 0.223/0.229/0.240/0.019 ms
user@host:~$ dig +add +trace @10.152.152.10 www.google.com
; <<>> DiG 9.9.5-9+deb8u8-Debian <<>> +add +trace @10.152.152.10 www.google.com
; (1 server found)
;; global options: +cmd
;; connection timed out; no servers could be reached
user@host:~$ curl 74.125.29.113
curl: (7) Failed to connect to 74.125.29.113 port 80: Connection timed out
But on an identically-configured workstation:
user@host:~/bin$ dig +add +trace @10.152.152.10 www.google.com
; <<>> DiG 9.9.5-9+deb8u8-Debian <<>> +add +trace @10.152.152.10 www.google.com
; (1 server found)
;; global options: +cmd
;; Received 17 bytes from 10.152.152.10#53(10.152.152.10) in 3 ms
user@host:~$ curl 74.125.29.113
<HTML><HEAD><meta http-equiv="content-type" content="text/html;charset=utf-8">
<TITLE>301 Moved</TITLE></HEAD><BODY>
<H1>301 Moved</H1>
The document has moved
<A HREF="http://www.google.com/">here</A>.
</BODY></HTML>
Everything else is working apart from this!