[Bug 3833] New: Setting User with a wildcard Host doesn't work correctly with ProxyJump

[bugzilla-daemon at mindrot.org]

https://bugzilla.mindrot.org/show_bug.cgi?id=3833

            Bug ID: 3833
           Summary: Setting User with a wildcard Host doesn't work
                    correctly with ProxyJump
           Product: Portable OpenSSH
           Version: -current
          Hardware: All
                OS: Mac OS X
            Status: NEW
          Severity: normal
          Priority: P5
         Component: ssh
          Assignee: unassigned-bugs at mindrot.org
          Reporter: marc.a.sarrel at jpl.nasa.gov

I need to log in to HostB with account UserB.  The routing is set up so
that I must hop through Host A with account UserA. I'm using forwarding
SSH keys with the ssh-agent on my Mac.

I have a config file like this on my local Mac:

Host *
  User UserA
Host HostA
  ...
Host HostB
  User UserB
  ProxyJump HostA

And this config file on HostA:

Host *
  User UserA
Host HostB
  User UserB

This fails when I type "ssh HostB" on my Mac.  It prompts me for the
password for UserA on HostB.  If I type "ssh HostA" on my Mac, then
type "ssh HostB" on HostA, everything works as expected and I log in
without typing any passwords or pass phrases.

If I change the config file on my Mac to this:

Host *
  ...
Host HostA
  User UserA
Host HostB
  User UserB
  ProxyJump HostA

I can type "ssh HostB" on my Mac and everything works correctly again.

But, this is really inconvenient.  It means I have to have a bunch more
User lines in my config file than I should need.  I want the first
config file above to work properly with ProxyJump.  I should be able to
specify a global default user name this way, and then override it only
as needed, even if I'm using ProxyJump.

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