Using the same two nodes I repeated the "Create a MultiChain private blockchain in 90 seconds" till 1.0-alpha-21.
From 1.0-alpha-22 I get an error such this:
Error: Couldn't connect to the seed node 10.10.20.90 on port 6737 - please check multichaind is running at that address and that your firewall settings allow incoming connections.
My nodes are two clones of LXC container with the following kernel:
root@multichain-01:~/multichain-1.0-alpha-22# uname -a
Linux multichain-01 3.16.0-4-amd64 #1 SMP Debian 3.16.36-1+deb8u2 (2016-10-19) x86_64 GNU/Linux
Is there something to change in configuration from alpha-22 ?