The gssonly_identification flag cannot be set on the default nodemap, but nodemap_inherit_properties() copies it unconditionally from the default to every newly created nodemap. If the on-disk default record has this flag bit set (e.g., from stale data in a field that was previously padded before being repurposed for NM_FL2_GSS_IDENTIFY), every new nodemap inherits the unintended value, and there is no way for an admin to clear it on the default.

Skip the inheritance of nmf_gss_identify when the source is the default nodemap. Also, expose gssonly_identification read-only on the default nodemap so admins can observe its underlying value for diagnostic purposes.