conf/130776: ip addresses like 10.1.1.1 with subnet mask 255.0.0.0 makes the box unreachable

[Manjunath Tata]

>Number:         130776
>Category:       conf
>Synopsis:       ip addresses like 10.1.1.1 with subnet mask 255.0.0.0 makes the box unreachable
>Confidential:   no
>Severity:       serious
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Jan 20 11:20:01 UTC 2009
>Closed-Date:
>Last-Modified:
>Originator:     Manjunath Tata
>Release:        4.11-RELEASE
>Organization:
Juniper Networks
>Environment:
bng-dlsw-bsd1# uname -a
FreeBSD bng-dlsw-bsd1.englab.juniper.net 4.11-RELEASE FreeBSD 4.11-RELEASE #0: Fri Jan 21 17:21:22 GMT 2005     root at perseus.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC  i386

>Description:
When an ip address in the 10 network i.e., say 10.1.1.1 with subnet mask 255.0.0.0 makes the box unreachable.
The same doesn't happen with 11,12,13 and so on networks.
But, when i try to configure an ip address like "ifconfig em1 10.0.56.141 netmask 255.0.0.0" works fine and the link(em1 here) is up with the address.


Note: This is only applicable or seen when configuring interfaces thru' the management port and not thru' the console.


>How-To-Repeat:
Just issue the command "ifconfig <if_name> 10.1.1.1 netmask 255.0.0.0".
You can see that the box is unreachable.


>Fix:


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