The following denial appears on systemd v256 boot:

type=PROCTITLE msg=audit(06/27/2024 09:12:41.729:64) : proctitle=/usr/lib/systemd/systemd-hostnamed
type=SYSCALL msg=audit(06/27/2024 09:12:41.729:64) : arch=x86_64 syscall=openat success=no exit=EACCES(Permission denied) a0=AT_FDCWD a1=0x7f16367414e4 a2=O_RDONLY|O_CLOEXEC a3=0x0 items=0 ppid=1 pid=635 auid=unset uid=root gid=root euid=root suid=root fsuid=root egid=root sgid=root fsgid=root tty=(none) ses=unset comm=systemd-hostnam exe=/usr/lib/systemd/systemd-hostnamed subj=system_u:system_r:systemd_hostnamed_t:s0 key=(null)
type=AVC msg=audit(06/27/2024 09:12:41.729:64) : avc: denied

for pid=635 comm=systemd-hostnam name=vsock dev="devtmpfs" ino=270 scontext=system_u:system_r:systemd_hostnamed_t:s0 tcontext=system_u:object_r:vsock_device_t:s0 tclass=chr_file permissive=0