I performed verification for bionic, impish, and focal in the following
fashion:

- Launched new lxd container
- ran `ssh -o "ConnectTimeout=$(perl -e 'use POSIX; my $max = 
int(POSIX::INT_MAX/1000)+1; print "$max\n";')" localhost` to verify it triggers 
the bug. All containers returned "Aborted (core dumped)"
- Enabled -proposed and upgraded ssh
- ran `ssh -o "ConnectTimeout=$(perl -e 'use POSIX; my $max = 
int(POSIX::INT_MAX/1000)+1; print "$max\n";')" localhost` again, this time to 
confirm the proposed fix.

To which they returned:

The authenticity of host 'localhost (127.0.0.1)' can't be established.
ECDSA key fingerprint is SHA256:$SOME_HASH.
Are you sure you want to continue connecting [...]? yes
Warning: Permanently added 'localhost' (ECDSA) to the list of known hosts.
root@localhost: Permission denied (publickey).

Confirming the fix did not trigger the error.


** Tags removed: verification-needed verification-needed-bionic 
verification-needed-focal verification-needed-impish
** Tags added: verification-done verification-done-bionic 
verification-done-focal verification-done-impish

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https://bugs.launchpad.net/bugs/1903516

Title:
  aborted (core dumped) when using ConnectTimeout > 2147483

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