tcp listening tests always fail with goss 0.4.9 if ipv6 present

[sshipway]

Describe the bug
Defining a tcp test as "tcp:443" or as "tcp4:443"
Port 443 is listening on 0.0.0.0 (tcp4 only)
Goss reports this as "expected false to equal true"

This test worked prior to the 0.4.9 upgrade (version 0.3.20) when no ipv6 present

Could it be related to tcp6 (which is now enabled on this host)? However even using 'tcp4:80' I still get a fail

How To Reproduce

• Have host with both ipv4 and ipv6 addresses
• Have apache running listening on port 80, tcp4
• verify connection (telnet localhost 80)
• create goss rule

port:
  tcp:80:
    listening: true

• Run goss test on this
• See that it fails

Expected Behavior
The test should pass, as the port is being listened on and can be connected to by telnet

Actual Behavior
test failed, even though it passed under goss 0.3.20, and the port is definitely listening

Environment:

• Version of goss
• OS/Distribution version (if applicable)