How do I add multiple IPv4 / Ipv6 inside jail?
FreeBSD does support Multi-IPv4/v6/no-IP jail and it was merged to STABLE release. You need to rebuild your kernel including jls(8) and to use the new features jail(8), jexec(8) and cpuset(1) with a new kernel. Another option is get FreeBSD 7.2 (RC1 or above) using cvsup, just do make buildworld. Here is what you need to put in /etc/rc.conf file for Multi-IPv4/v6/no-IP jail configuration for httpd jail (note there are 3 ips defined):
jail_enable="YES" jail_list="httpd" jail_httpd_rootdir="/iscsi/httpd" # jail's root directory jail_httpd_hostname="web01.cyberciti.com" # jail's hostname jail_httpd_ip="10.24.55.106,188.8.131.52,2607:f0d0:1002:11::4" # jail's multi IPs address jail_smtpd_devfs_enable="YES" # mount devfs in the jail jail_smtpd_devfs_ruleset="devfsrules_jail" # devfs ruleset to apply to jail
Save and close the file. Restart jail service:
# /etc/rc.d/jail restart
To verify multiple IP, enter:
# jls -v
JID Hostname Path Name State CPUSetID IP Address(es) 2 web01.cyberciti.com /iscsi/httpd ALIVE 2 10.24.55.106 184.108.40.206 2607:f0d0:1002:11::4
From the man page:
jail_httpd_ip is used to set to the primary IPv4 and/or IPv6 addresses assigned to the jail. The argument can be a sole address or a comma separated list of addresses. Additionally each address can be prefixed by the name of an interface followed by a pipe to overwrite jail_
_interface or jail_interface and/or suffixed by a netmask, prefixlen or prefix. In case no netmask, prefixlen or prefix is given, /32 will be used for IPv4 and /128 will be used for an IPv6 address. If no address is given for the jail then the jail will be started with no networking support.
This FAQ entry is 3 of 6 in the "FreeBSD Jail Operating System-level Virtualization Tutorial" series. Keep reading the rest of the series: