https://bugzilla.redhat.com/show_bug.cgi?id=1019256 there is a fresh openssh build for F18 on koji http://koji.fedoraproject.org/koji/buildinfo?buildID=479133 but F18 openssl was not rebuilt with "add back support for secp521r1 EC curve" http://koji.fedoraproject.org/koji/buildinfo?buildID=477538 so i am not sure if this should not be done first on my F19 machines today i generated ECDSA keys which are working fine ecdsa-sha2-nistp521
This message is a reminder that Fedora 18 is nearing its end of life. Approximately 4 (four) weeks from now Fedora will stop maintaining and issuing updates for Fedora 18. It is Fedora's policy to close all bug reports from releases that are no longer maintained. At that time this bug will be closed as WONTFIX if it remains open with a Fedora 'version' of '18'. Package Maintainer: If you wish for this bug to remain open because you plan to fix it in a currently maintained version, simply change the 'version' to a later Fedora version prior to Fedora 18's end of life. Thank you for reporting this issue and we are sorry that we may not be able to fix it before Fedora 18 is end of life. If you would still like to see this bug fixed and are able to reproduce it against a later version of Fedora, you are encouraged change the 'version' to a later Fedora version prior to Fedora 18's end of life. Although we aim to fix as many bugs as possible during every release's lifetime, sometimes those efforts are overtaken by events. Often a more recent Fedora release includes newer upstream software that fixes bugs or makes them obsolete.