kern/47738: connect(2) to 239.x.y.z should return net unreachable but it does not

[christos%netbsd.org@localhost]

>Number:         47738
>Category:       kern
>Synopsis:       connect(2) to 239.x.y.z should return net unreachable but it 
>does not
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Apr 12 21:25:00 +0000 2013
>Originator:     Christos Zoulas
>Release:        NetBSD 6.99.19
>Organization:
        Boredom International
>Environment:
System: NetBSD quasar.astron.com 6.99.19 NetBSD 6.99.19 (QUASAR) #54: Fri Apr 
12 12:57:48 EDT 2013 
christos%quasar.astron.com@localhost:/usr/src/sys/arch/amd64/compile/QUASAR 
amd64
Architecture: x86_64
Machine: amd64
>Description:
        Connect returns EINPROGRESS with the underlying socket error from
        getsockopt == 0.
>How-To-Repeat:
        try telnet 239.10.20.30 80
>Fix:
        make the kernel smarter. If it tries to route the address and it is
        in the unroutable address space kill it immediately.