pfSense

I noticed that removed interface groups are still shown by pfctl -s Interfaces until I reboot the machine.
So I did some more checks on 2.0-RC3 (amd64) built on Thu Jul 21 00:28:37 EDT 2011:

1. Add an interface group Foobar, add two interfaces lagg0_vlan200 and lagg0_vlan51.

2. Remove interface group Foobar. Group does not appear in the web gui, but shell output shows it still:

# pfctl -s Interfaces
...
Foobar
...

# ifconfig -g Foobar                                                                                                    
lagg0_vlan200                                                                                                                                                          
lagg0_vlan51                     

3. Re-create same group Foobar, same interfaces. No error shown. Appears in web gui and shell output as it should.

4. Edit group, rename to Barfoo. Again web gui shows all fine, but shell shows both group names, Barfoo with all the interfaces, and Foobar empty.

# pfctl -s Interfaces
...
Barfoo
Foobar
...

# ifconfig -g Foobar
# ifconfig -g Barfoo
lagg0_vlan200
lagg0_vlan51

5. Remove group Barfoo. Barfoo still shown in shell output with all interfaces, instead the old name Foobar is finally removed.

# pfctl -s Interfaces
...
Barfoo
...

# ifconfig -g Barfoo
lagg0_vlan200
lagg0_vlan51