Documentation > Userspace Application > Flags > --pool6791
--pool6791
Index
Description
Interacts with Jool’s RFC 6791 pool. The pool defines addresses for untranslatable sources in ICMP errors.
If this pool is empty, Jool will fall back to use its node’s addresses for these cases.
Syntax
jool_siit --pool6791 [--display]
jool_siit --pool6791 --count
jool_siit --pool6791 --add <IPv4 prefix>
jool_siit --pool6791 --remove <IPv4 prefix>
jool_siit --pool6791 --flush
Options
--display
: The pool’s prefixes are printed in standard output. This is the default operation.--count
: The number of addresses (not prefixes) in the pool is printed in standard output.
For example, if all you have is a /24 prefix, expect “256” as output.--add
: Uploads<IPv4 prefix>
to the pool.--remove
: Deletes<IPv4 prefix>
from the pool.--flush
: Removes all prefixes from the pool.
Examples
Display the current prefixes:
$ jool_siit --pool6791 --display
192.0.2.0/24
198.51.100.0/26
203.0.113.16/28
(Fetched 3 prefixes.)
This means the source address of a normally untranslatable ICMP error is going to be any within the following ranges: 192.0.2.0-192.0.2.255, 198.51.100.0-198.51.100.64, or 203.0.113.16-203.0.113.31.
Display only the prefix count:
$ jool_siit --pool6791 --count
336
(That’s /24 + /26 + /28 = 256 + 64 + 16.)
Remove a prefix:
$ jool_siit --pool6791 --remove 192.0.2.0/24
Return it:
$ jool_siit --pool6791 --add 192.0.2.0/24
Destroy all prefixes. Jool will start using its host’s addresses as source.
$ jool_siit --pool6791 --flush