I _think_ he's talking about whether or not OpenSSL supports AES-GCM. e.g. Debian 7 has a version of OpenSSL that supports AES-GCM, but OpenSSH isn't one of th

I _think_ he's talking about whether or not OpenSSL supports AES-GCM. e.g. Debian 7 has a version of OpenSSL that supports AES-GCM, but OpenSSH isn't one of the affected versions.