Can't ping6 IPv6 hosts

[avibrazil]

IPv6 hosts that are acessible to the Cacti host server appear as unavailable in the UI.
Additionally, in the cacti_stderr.log I'm getting lots of messages like this:

sh: line 1: ping6: command not found

I guess this is related.

Problem happens with and without the cacti-spine package installed.

On the Cacti host I can successfuly ping6 the cacti-monitored hostname:

cactiserver$ ping6 ipv6-host.domain.com
PING ipv6-host.domain.com(2804:....::4 (2804:....::4)) 56 data bytes
64 bytes from 2804:....::4 (2804:....::4): icmp_seq=1 ttl=53 time=239 ms
64 bytes from 2804:....::4 (2804:....::4): icmp_seq=2 ttl=53 time=239 ms

About my environment:

# which ping6
/usr/sbin/ping6
# rpm -qf /usr/sbin/ping6
iputils-20221126-1.fc37.x86_64
# rpm -qa | grep cacti
cacti-1.2.25-1.fc37.noarch
cacti-spine-1.2.25-1.fc37.x86_64

I have Cacti 1.2.25 installed from official RPMs on a Fedora 37 host.

The expected behavior is to have Cacti successfuly ping6 addresses as its host does.

I've found other bug reports related to pinging IPv6. I also tryied to download patched files from Cacti's developer branches, such as scripts/ping.pl, but they are identical to my system's files. If this was already solved in other bug reports, please point me to the patched file on the repo so I can cirurgically substitute it in my system while waiting for new RPMs.

Thank you in advance.

[TheWitness]

If you edit /lib/ping.php, edit the references to "ping6" and replace with "/usr/sbin/ping6", let us know if the issue goes away.

[TheWitness]

Sorry, we do not support ping6 in Spine yet. Looking for a contributor still.

[TheWitness]

Duplicate of #127

[TheWitness]

This is fixed in cacti now.

[avibrazil]

Would please provide more details on where it was fixed, branch, commit etc?

I’d like to backport the patches to my 1.2.25 installation.

thank you in advance

[TheWitness]

Spine does not ping ICMP v6 hosts. So, though it's fixed in upstream Cacti, if you use the Availablilty/Reachability of Ping ICMP, it's not going to work. Suggesting that IPv6 devices use one of the SNMP Availability/Reachability methods.

[TheWitness]

Though, if you are using the ping Graph Template, you should update lib/ping.php from the 1.2.x branch, and you should be all set.