[Cialug] Inconsistent consistently long DNS lookup times

[Zachary Kotlarek]

On Mar 9, 2010, at 11:33 PM, Colin Burnett wrote:

> Which pretty much details my problems.  Seems Ubuntu just patched
> glibc for their own distro and that's that.


Did you expect them to argue with Ulrich about what glibc should do? They'd be better off trying to fix all the broken DNS infrastructure.


>> The first is to point to a ... local DNS proxy
> 
> Yes, I will have to look into setting up such a proxy.  Any
> suggestions on public DNS servers that handle this correctly?  I tried
> Google's 8.8.8.8 and 8.8.4.4 but they seemed to ignore AAAA like
> Qwest's servers do.


I think you have a firewall/other issue that's blocking AAAA requests. Both 205.171.3.65 and 8.8.8.8 work fine for me. Are you sure your local router isn't proxying requests for you? Many of them advertise themselves as the local DNS resolver or intercept requests even when advertising other resolvers.

baldwin ~ 0$ dig @8.8.8.8 AAAA ipv6.google.com
...
;; ANSWER SECTION:
ipv6.google.com.	10765	IN	CNAME	ipv6.l.google.com.
ipv6.l.google.com.	265	IN	AAAA	2001:4860:800b::68
...

baldwin ~ 0$ dig @205.171.3.65 AAAA ipv6.google.com
...
;; ANSWER SECTION:
ipv6.google.com.	10800	IN	CNAME	ipv6.l.google.com.
ipv6.l.google.com.	300	IN	AAAA	2001:4860:800b::68
...

	Zach

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