[Bug 2820] New: Add support for ssh client to bind to an interface

[bugzilla-daemon at bugzilla.mindrot.org]

https://bugzilla.mindrot.org/show_bug.cgi?id=2820

            Bug ID: 2820
           Summary: Add support for ssh client to bind to an interface
           Product: Portable OpenSSH
           Version: 7.6p1
          Hardware: Other
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P5
         Component: ssh
          Assignee: unassigned-bugs at mindrot.org
          Reporter: mvrmanning at gmail.com

Created attachment 3114
  --> https://bugzilla.mindrot.org/attachment.cgi?id=3114&action=edit
Suggested diff

While the ssh client can bind to a specified source address, the caller
needs to have resolved the host beforehand so as to know to pass an
IPv4
or IPv6 address. By instead specifying an interface to bind to, the ssh
client can select a suitable address of the correct family configured
on
this interface. More importantly, this allows the source addresses to
be
modified without each time having to update the ssh config. A common
usecase on networking devices is to specify typically a loopback
interface on which the addresses to bind to are configured.

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