optionalDeleteCmds := [][]string{
		// flush-then-delete our created chains
		{"-t", iptablesconstants.MANGLE, "-F", ChainInpodPrerouting},
		{"-t", iptablesconstants.MANGLE, "-F", ChainInpodOutput},
		{"-t", iptablesconstants.NAT, "-F", ChainInpodOutput},
		{"-t", iptablesconstants.MANGLE, "-X", ChainInpodPrerouting},
		{"-t", iptablesconstants.MANGLE, "-X", ChainInpodOutput},
		{"-t", iptablesconstants.NAT, "-X", ChainInpodOutput},
	}

					Go: &ast.FuncType{
						Results: &ast.FieldList{List: []*ast.Field{{Type: n.Type.Go}}},
					},
				}
			}
		}
		p.mangleName(n)
		if n.Kind == "type" && typedef[n.Mangle] == nil {
			typedef[n.Mangle] = n.Type
		}
	}
}

// mangleName does name mangling to translate names
// from the original Go source files to the names
// used in the final Go files generated by cgo.

		d, ok := d.(*ast.GenDecl)
		if !ok || d.Tok != token.TYPE {
			continue
		}
		for _, s := range d.Specs {
			s := s.(*ast.TypeSpec)
			n := refName[&s.Type]
			if n != nil && n.Mangle != "" {
				override[n.Mangle] = s.Name.Name
			}
		}
	}

	// Extend overrides using typedefs:
	// If we know that C.xxx should format as T
	// and xxx is a typedef for yyy, make C.yyy format as T.