allowed_hosts does not work with IPv6 hostnames

[Paul Collins]

We've noticed that IPv6 nrpe connections are not being permitted when allowed_hosts is set to a DNS name that resolves to an AAAA record. This was reported upstream as https://github.com/NagiosEnterprises/nrpe/issues/31 in 2015 and fixed in https://github.com/NagiosEnterprises/nrpe/commit/1ac990954b7806d9cc92fa340808b29219e872a1 for https://github.com/NagiosEnterprises/nrpe/tree/nrpe-2-16-RC2, but unfortunately the patch doesn't apply to 2.15, which is the version in trusty and xenial.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Miriam España Acebal (mirespace)]

Hi,

I hit this very old bug while doing some clearance.

Trusty and Xenial reached EOSS (End of Standard Support) so I'm afraid it can't be fixed. It is unfortunate that we were unable to resolve this defect, however, there appears to be no further action possible at this time because it's not a security bug.

As you kindly provided, the patch was applied for higher versions, so this bug doesn't apply to any Ubuntu series in support.

However, if you find that the same problem continues to occur, do not hesitate to raise it again.