After T3506 backslash() is missing, throwing the following error:
```
vyos@vyos# loadkey vyos /home/vyos/.ssh/id_rsa.pub
Global symbol "$generate" requires explicit package name (did you forget to declare "my $generate"?) at /opt/vyatta/sbin/vyatta-load-user-key.pl line 162.
Execution of /opt/vyatta/sbin/vyatta-load-user-key.pl aborted due to compilation errors.
[edit]
vyos@vyos#
```