In current form, if the --keyserver provided during a --recv-keys request is down,
there is no automated retry against an alternate keyserver. This is problematic when
piping the output directly to a utility such as apt-key. Even if the keyserver is
checked prior to the pipe, there is still be a chance on a second attempt the keyserver
will be down.

I wish that --keyserver be augmented in some form such that multiple hosts can be
attempted, either as a comma separated list, by providing the argument multiple times,
or providing another argument such as --alternate-keyserver which will log the outage
when the first keyserver fails, but continue on and use the alternate keyserver.