handle EPERM error returned on AF_CAN

unix/syscall_internal_linux_test.go

@@ -232,6 +232,10 @@ func Test_anyToSockaddr(t *testing.T) {
 					t.Skip("socket family/protocol not supported by kernel")
 				} else if  err == EAFNOSUPPORT {
 					t.Skip("socket address family not supported by kernel")
+				} else if err == EPERM {
+					// Some platforms might require elevated privileges to perform
+					// actions on sockets. Skip the test in this situation.
+					t.Skip("socket operation not permitted")
 				} else if err != nil {
 					t.Fatalf("socket(%v): %v", tt.skt, err)
 				}