It looks like a `jail -m` is not correctly handling jail.conf and then sets incorrect values to a running jail. Example, here the `php` jail is getting the wrong hostname, ip6 address, and devfs ruleset.

root# jls -a
   JID  IP Address      Hostname                      Path
     1                  localhost                     /zroot/webserver/jails/mysql
     8  129.174.130.141 www.ccsa.gmu.edu              /zroot/webserver/jails/php

root# jail -mv
mysql: jail_set(JAIL_UPDATE) jid=1 name=mysql securelevel=2 host.hostname=localhost devfs_ruleset=5
mysql: updated
php: jail_set(JAIL_UPDATE) jid=8 name=php securelevel=2 host.hostname="" ip4.addr=129.174.130.141 ip6.addr="" devfs_ruleset=0
php: updated

root# jls -a
   JID  IP Address      Hostname                      Path
     1                  localhost                     /zroot/webserver/jails/mysql
     8  129.174.130.141                               /zroot/webserver/jails/php


/etc/jail.conf:
mysql {
        securelevel=2;
        host.hostname="localhost";
        ip4 = disable;
        ip6 = disable;
        path = "/var/jails/mysql";
        devfs_ruleset=5;
        mount.devfs;
        exec.start = "/usr/sbin/daemon -c -f /usr/local/bin/mysqld_safe --user=mysql --datadir=/var/db --pid-file=/var/run/mysql.pid --explicit_defaults_for_timestamp=true";
        exec.stop = "/bin/pkill -TERM -F /var/run/mysql.pid";
}
php {
        securelevel=2;
        host.hostname="www.ccsa.gmu.edu";
        ip4.addr=129.174.130.141;
        ip6.addr=2620:10e:6024:f004::141;
        path = "/var/jails/php";
        devfs_ruleset=5;
        mount.devfs;
        mount.fstab = "/var/jails/php/etc/fstab";
        exec.start = "/usr/sbin/php-fpm";
        exec.stop = "/bin/pkill -QUIT -F /var/run/php-fpm.pid";
}