I've been looking for a solution to the following problem for the past 2 hours with no luck.
I'm using publickey authentication to connect to my servers. I use ssh-agent forwarding in order to not have to manage public/privates keys.
Let's say I have servers
A, B and C.
This works very well if I connect from
LOCAL ---> A ---> B.
It also works very well if I do
LOCAL ---> A ---> C.
Now, if I try
LOCAL ---> A ---> B ---> C, SSH can't connect from
B to C.
Worth noting: I connect to server A as liquidity, whereas I connect to server B as root. Connecting to server B as liquidity fixes the problem, but this is not an option for me.
As per the recommendation of a user, I use
ssh -A each time to make sure that agent forwarding is enabled.
I found one similar question, with no answer here: Is it possible to chain ssh-agent forwarding through multiple hops?
According to @Zoredache here: http://serverfault.com/a/561576/45671 I just need to adjust my client configuration on each intermediate system. Which I believe I did.