diff options
Diffstat (limited to 'middleware/file/file.go')
| -rw-r--r-- | middleware/file/file.go | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/middleware/file/file.go b/middleware/file/file.go index caf0c5fbc..a647f9d12 100644 --- a/middleware/file/file.go +++ b/middleware/file/file.go @@ -1,6 +1,7 @@ package file import ( + "fmt" "io" "log" @@ -24,6 +25,10 @@ type ( func (f File) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Msg) (int, error) { state := middleware.State{W: w, Req: r} + if state.QClass() != dns.ClassINET { + return dns.RcodeServerFailure, fmt.Errorf("file: can only deal with ClassINET") + } + qname := state.Name() zone := middleware.Zones(f.Zones.Names).Matches(qname) if zone == "" { |