when I ssh to a server I can use a few options to specify which key is used, for example:
ssh -o identityfile=~/.ssh/cool -o identitiesonly=yes serverA
This prevents too many tries, which could end up denying one access to a server. but if I ssh to one server with forwardagent set. and then try to ssh to another server from there, it has to use the ssh-agent, which tries all the keys that it has until it finds the right one or is denied for having tried too many keys. Can I have the ssh-agent use a specific key in the ssh-agent?