I've successfully performed the testing described in the [libseccomp Test Case] section of the bug 1567597 description using libseccomp 2.3.1-2.1ubuntu2~16.04.1 from xenial-proposed. It includes the libseccomp live tests (which aren't used during the build) and a specific test of the new seccomp logging functionality. (I'm mentioning my testing here because bug 1567597 isn't mentioned in the changelog of the SRU upload.)
I've successfully performed the testing described in the [libseccomp Test Case] section of the bug 1567597 description using libseccomp 2.3.1-2. 1ubuntu2~ 16.04.1 from xenial-proposed. It includes the libseccomp live tests (which aren't used during the build) and a specific test of the new seccomp logging functionality. (I'm mentioning my testing here because bug 1567597 isn't mentioned in the changelog of the SRU upload.)