I had an issue in ubuntu 13.10 and 12.10 where attempting to connect to github (git clone / pull / push or anything) would fail with no output.
I checked my /.ssh directory for
config and any ssh keys. Had no config file and the ssh key for
id_rsa was the same one that was live on my github.com account.
I attempted to ping the github servers and was able too.
I followed the github guide to debug the situation - it suggests
ssh -T -v firstname.lastname@example.org
The output stops at:
debug1: sending SSH2_MSG_KEX_ECDH_INIT debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
Anyone have a solution to allow my git pull / push etc to work.