misc/170832: jail v2 loses a binding of ip which sets after ips with /"network prefix"

[Oleg Ginzburg]

>Number:         170832
>Category:       misc
>Synopsis:       jail v2 loses a binding of ip which sets after ips with /"network prefix"
>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:   Tue Aug 21 18:50:10 UTC 2012
>Closed-Date:
>Last-Modified:
>Originator:     Oleg Ginzburg
>Release:        9.1-PRERELEASE, 10-CURRENT
>Organization:
>Environment:
FreeBSD cbuilder64.my.domain 10.0-CURRENT FreeBSD 10.0-CURRENT #4 r239330: Thu Aug 16 22:08:12 MSK 2012     root at cbuilder64.my.domain:/usr/obj/usr/src/sys/GENERIC  amd64
>Description:
when the jail is created by config file with multiple ips, jail loses all ip assignment which sets after ips with /"network prefix"
Nevertheless, all IP are established on the interface with the correct mask
>How-To-Repeat:
Have jail config with multiple ips with prefix in the list. Config sample (we mean that in /usr/jails/jail1 we have a complete freebsd base environment):

% cat jail1.conf 
jail1 {
exec.start = "/bin/sh /etc/rc";
exec.stop = "/bin/sh /etc/rc.shutdown";
exec.clean;
#mount.devfs;
host.hostname = "jail1.my.domain";
path = "/usr/jails/jail1";
allow.raw_sockets;
allow.socket_af;
allow.chflags;
allow.sysvipc;
ip4.addr = 10.0.0.1,10.0.0.2,172.17.0.0/16,10.0.0.3;
interface="em0";
mount.devfs;
devfs_ruleset="4";
}

// Before jail creation, interfaces em0 have:
% ifconfig em0 | grep "inet "
        inet 192.168.1.2 netmask 0xffffff00 broadcast 192.168.1.255

// Jail start:
% jail -f jail1.conf -c jail1
jail1: created
..

//done. Check for IPs on interface. 172.17.0.0 have correct mask:
ifconfig em0 | grep "inet "
        inet 192.168.1.2 netmask 0xffffff00 broadcast 192.168.1.255 
        inet 10.0.0.1 netmask 0xffffffff broadcast 10.0.0.1 
        inet 10.0.0.2 netmask 0xffffffff broadcast 10.0.0.2 
        inet 172.17.0.0 netmask 0xffff0000 broadcast 172.17.255.255 
        inet 10.0.0.3 netmask 0xffffffff broadcast 10.0.0.3 

//Check for IP in jls:
% jls -v
   JID  Hostname                      Path
        Name                          State
        CPUSetID
        IP Address(es)
     1  jail1.my.domain               /usr/jails/jail1
        jail1                         ACTIVE
        2     
        10.0.0.1       
        10.0.0.2       
        172.17.0.0     

We have 10.0.0.1/32,10.0.0.2/32 and 172.17.0.0/16 but loose 10.0.0.3

>Fix:


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