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An NSS update has broken some functionality in libsrtp. This has been fixed upstream for version 2.4[1], and was backported into Fedora 34[2], but remains a problem in EL9 and CentOS. See #1948729 for details and a patch that resolves the problem.

The problem manifested itself for us when trying to run Asterisk built on EL9.1 with libsrtp-2.3.0-7.el9 and encountered these error messages:

    WARNING[47044] res_srtp.c: Failed to initialize libsrtp
    ERROR[47044] loader.c: *** Failed to load module res_srtp.so
    ERROR[47044] asterisk.c: Module initialization failed.  ASTERISK EXITING!

Applying the patch and building locally resolved the issue, as did installing the updated Fedora RPM.

[1] https://github.com/cisco/libsrtp/commit/23576ff4c0ed505997eceace69a336f6bf629027
[2] https://bodhi.fedoraproject.org/updates/FEDORA-2021-9ac23c1745

Wim, mind taking a look here? Looks like a trivial patch to include

I made a merge request: https://gitlab.com/redhat/centos-stream/rpms/libsrtp/-/merge_requests/3 just need QA ack to get it in.

*** Bug 2163492 has been marked as a duplicate of this bug. ***

Would you consider adding the %check section I suggested in https://bugzilla.redhat.com/show_bug.cgi?id=2211526 ?

Or do you prefer if I propose that to be added to the package in Fedora?

What %check option? (your link recursively links to this bug).

Yes, also add this to fedora if it's useful.

Oh, sorry, I got the link from the wrong tab.

I meant this one from the bug marked as duplicate:
https://bugzilla.redhat.com/show_bug.cgi?id=2163492#c0

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (libsrtp bug fix and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2023:6565