On Monday, October 12, 2015 02:34:25 AM Reco wrote:
>       Hi.
> 
> On Sun, 11 Oct 2015 21:19:32 -0400
> 
> Ed Jabbour <e...@att.net> wrote:
> > Running Wheezy.  Recently, update has been hanging on
> > http://security.debian.org/ wheezy/updates main and
> > http://http.debian.net/debian wheezy-backports main.  
> 
> Have you tested the possibility of MTU blackhole somewhere between
> you and security.debian.org?
> 
> I.e. given conventional Ethernet, and normal circumstances, this
> should work:
> 
> ping -s 1472 -M dont -c 4 security.debian.org
> 
> But if something just discards IP packets with MTU 1500 along the
> way, such ping would fail.
> 
> Reco

I ran it and got:

[Mon Oct 12]~ $ ping -s 1472 -M dont -c 4 security.debian.org
PING security.debian.org (128.61.240.73) 1472(1500) bytes of data.
1480 bytes from sechter.debian.org (128.61.240.73): icmp_req=1 ttl=52 
time=70.3 mshttp.debian.net/
1480 bytes from sechter.debian.org (128.61.240.73): icmp_req=2 ttl=52 
time=70.5 ms
1480 bytes from sechter.debian.org (128.61.240.73): icmp_req=3 ttl=52 
time=70.7 ms
1480 bytes from sechter.debian.org (128.61.240.73): icmp_req=4 ttl=52 
time=70.7 ms

Looks OK to me.  I changed the backports repo from debian.net to 
uchicago.edu and everything just flows.  Now, if I can only find the 
problem with security.debian.net, which as I understand it, has no 
trustworthy mirrors

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