Salt error when using sysrc.managed

gistfile1.txt

The salt state

Set the default firewall rule to accept:
  sysrc.managed:
    - name: net.inet.ip.fw.default_to_accept
    - file: /tmp/loader.conf
    - value: 1

gistfile2.txt

The error

     ID: Set the default firewall rule to accept
    Function: sysrc.managed
        Name: net.inet.ip.fw.default_to_accept
      Result: False
     Comment: An exception occurred in this state: Traceback (most recent call last):
                File "/usr/local/lib/python2.7/site-packages/salt/state.py", line 1750, in call
                  **cdata['kwargs'])
                File "/usr/local/lib/python2.7/site-packages/salt/loader.py", line 1705, in wrapper
                  return f(*args, **kwargs)
                File "/usr/local/lib/python2.7/site-packages/salt/states/sysrc.py", line 66, in managed
                  new_state = __salt__['sysrc.set'](name=name, value=value, **kwargs)
                File "/usr/local/lib/python2.7/site-packages/salt/modules/sysrc.py", line 119, in set_
                  newval = sysrc.split(': ')[2].split(" -> ")[1]
              IndexError: list index out of range
     Started: 16:34:14.035828
    Duration: 152.016 ms
     Changes:

gistfile3.txt

cat /tmp/loader.conf
net.inet.ip.fw.default_to_accept="1"