feat(tun): mention in 'operation not permitted' error the user should…

… specify --device /dev/net/tun
qdm12 · Oct 28, 2024 · f1f3472 · f1f3472
1 parent 937c667
commit f1f3472
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/internal/tun/create.go b/internal/tun/create.go
@@ -34,6 +34,9 @@ func (t *Tun) Create(path string) (err error) {
 
 	fd, err := unix.Open(path, 0, 0)
 	if err != nil {
+		if err.Error() == "operation not permitted" {
+			err = fmt.Errorf("%w (did you specify --device /dev/net/tun to your container command?)", err)
+		}
 		return fmt.Errorf("unix opening TUN device file: %w", err)
 	}