misc/187904: ipfw (8) does not properly recognize the network in shorthand

[Vladislav V. Prodan]

>Number:         187904
>Category:       misc
>Synopsis:       ipfw (8) does not properly recognize the network in shorthand
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Mon Mar 24 18:00:01 UTC 2014
>Closed-Date:
>Last-Modified:
>Originator:     Vladislav V. Prodan
>Release:        FreeBSD 10.0
>Organization:
support.od.ua
>Environment:
FreeBSD bimbo.YYY 10.0-STABLE FreeBSD 10.0-STABLE #0: Sun Mar 23 08:14:35 EET 2014     root at bimbo.YYY:/usr/obj/usr/src/sys/bimbo.3  amd64

>Description:

When network is added to the table ipfw in shortened form, network ::/0 appears
By the context of the rules ipfw - drop or reset, network ::/0 can block access to the target machine. 
In the system 9.0 such behavior was not observed. 
For example, the network 177.204/14

#whois -L 177.204/14
..
inetnum:     177.204/14
aut-num:     AS18881
abuse-c:     GOI
owner:       Global Village Telecom
..
>How-To-Repeat:
#ipfw table 100 list
#ipfw table 100 add 177.204/14
#ipfw table 100 list
::/0 0

>Fix:


>Release-Note:
>Audit-Trail:
>Unformatted: