iocage startup error

etc_jail_conf

## created too test iocage startup without using iocage.

# Typical static defaults:
# Use the rc scripts to start and stop jails.  Mount jail's /dev.
exec.start      = "/bin/sh /etc/rc";
exec.stop       = "/bin/sh /etc/rc.shutdown";
exec.clean;
mount.devfs;

# Dynamic wildcard      parameter:
# Base the      path off the jail name.
path = "/iocage/jails/$name/root";

## did not include ipv4 in this all the time that works as it should

a3cbb55a-2765-4033-9dba-3141ce2add17{
        host.hostname = "irssi.g.l9";
        ip6.addr="em0|2a01:4f8:151:64a3::1/64";
        }

startup_with_iocage

root@gaia:/home/muad/iocage # iocage start irssi
* Starting a3cbb55a-2765-4033-9dba-3141ce2add17 (irssi)
  + Started OK
  + Starting services OK

root@gaia:/home/muad/iocage # jls
   JID  IP Address      Hostname                      Path
    45  10.0.0.1        irssi.g.l9                    /iocage/jails/a3cbb55a-2765-4033-9dba-3141ce2add17/root

root@gaia:/home/muad/iocage # jexec 45 netstat -an
netstat: kvm not available: /dev/mem: No such file or directory
Active Internet connections (including servers)
Proto Recv-Q Send-Q Local Address          Foreign Address        (state)
tcp4       0      0 10.0.0.1.22            *.*                    LISTEN
Active UNIX domain sockets
Address          Type   Recv-Q Send-Q            Inode             Conn             Refs          Nextref Addr
fffff80013fa8690 dgram       0      0                0 fffff80013ff90f0                0                0
fffff80013ff90f0 dgram       0      0 fffff801140753b0                0 fffff80013fa8690                0 /var/run/logpriv
fffff80013f942d0 dgram       0      0 fffff8026ace81d8                0                0                0 /var/run/log

root@gaia:/home/muad/iocage # iocage get ip6_addr irssi
em0|2a01:4f8:151:64a3::1/64

startup_without_iocage

root@gaia:/home/muad # jail -c 
a3cbb55a-2765-4033-9dba-3141ce2add17: created
ELF ldconfig path: /lib /usr/lib /usr/lib/compat /usr/local/lib /usr/local/lib/perl5/5.24/mach/CORE
32-bit compatibility ldconfig path: /usr/lib32
/etc/rc: WARNING: $hostname is not set -- see rc.conf(5).
Creating and/or trimming log files.
Starting syslogd.
protect: procctl: Operation not permitted
Clearing /tmp (X related).
Updating motd:.
Performing sanity check on sshd configuration.
Starting sshd.
Starting cron.

Fri Apr 14 04:47:53 UTC 2017
root@gaia:/home/muad # jexec 43 netstat -an
netstat: kvm not available: /dev/mem: No such file or directory
Active Internet connections (including servers)
Proto Recv-Q Send-Q Local Address          Foreign Address        (state)
tcp6       0      0 2a01:4f8:151:64a.22    *.*                    LISTEN
Active UNIX domain sockets
Address          Type   Recv-Q Send-Q            Inode             Conn             Refs          Nextref Addr
fffff80013f941e0 dgram       0      0                0 fffff80013fa8690                0                0
fffff80013fa8690 dgram       0      0 fffff8019d458588                0 fffff80013f941e0                0 /var/run/logpriv
fffff80013fa8780 dgram       0      0 fffff8019d6fd000                0                0                0 /var/run/log

var_log_messages

Apr 14 04:52:34 irssi syslogd: kernel boot file is /boot/kernel/kernel
Apr 14 04:52:34 irssi sshd[97801]: error: Bind to port 22 on :: failed: Can't assign requested address.

## this is only during the iocage startup !