routing message problem

[Michael Tüxen]

Dear all,

via a bug report from Preethi I figured out that there are no  
RTM_NEWADDR
routing messages generated when an IP address is added to an interface
and there is already an address in the same network configured.
This is a problem for the SCTP stack.

To reproduce the problem you can
sudo ifconfig em0 192.168.1.1
sudo ifconfig em0 192.168.1.2 alias

and use the attached problem. It will only show the first address
being added. This problem applies to FreeBSD 9.0 CURRENT and 7.2  
RELEASE.

Any idea how to fix the problem?

Best regards
Michael