I<Type of Service> (ToS) aliases were used to specify the bits of outgoing
packets.
+=item B<-m> I<mark>
+
+I<Linux only> Sets the I<mark> (an integer number) on outgoing packets. This
+can be used by L<iptables(8)> and other networking infrastructure for filtering
+and routing.
+
=item B<-u>|B<-U>
I<noping only> B<-u> forces UTF-8 output, B<-U> disables UTF-8 output. If