WordPress multi user get a for serving blog experince to our student. The architecture is : Firewall -> FreeBSD Box -> Jail Box A lot of jails (around 14) put inside FreeBSD Box to server student with different purpose. One of them is for wordpress muti user. # jls JID  IP Address      Hostname                      Path 14  ...

Wow, that message is shown when I check UPDATING after latest csup to STABLE. 20090207: Multi-IPv4/v6/no-IP jail support was merged to STABLE. You need to rebuild jls(8) and to use the new features jail(8), jexec(8) and cpuset(1) with a new kernel. __FreeBSD_version was bumped to 701103. Try to do that : # cd /usr/src/usr.sbin/jls/ # ...