I was not able to connect to forum.bitcoin.org.
A little investigation showed that for me in the US Midwest, the louhi.net DNS servers that are supposed to be authoritative for bitcoin.org are all timing out. (They are timing out on non bitcoin.org queries too.)
I got the IP for the forum from a different DNS server than my standard one and hard-coded a hosts entry.
It looks like the attack may be moving to the DNS infrastructure.
The forum IP I'm using is 188.8.131.52.
What does this mean for my client? Does it need a DNS lookup to grab the blockchain?
If so, anyone know what the actual IP is?