curl/docs/cmdline-opts/ip-tos.md

c	SPDX-License-Identifier	Long	Arg	Help	Added	Category	Protocols	Multi	See-also	Example
Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.	curl	ip-tos	<string>	Set IP Type of Service or Traffic Class	8.9.0	connection	All	single	tcp-nodelay vlan-priority	--ip-tos CS5 $URL

--ip-tos

Set Type of Service (TOS) for IPv4 or Traffic Class for IPv6.

The values allowed for <string> can be a numeric value between 1 and 255 or one of the following:

CS0, CS1, CS2, CS3, CS4, CS5, CS6, CS7, AF11, AF12, AF13, AF21, AF22, AF23, AF31, AF32, AF33, AF41, AF42, AF43, EF, VOICE-ADMIT, ECT1, ECT0, CE, LE, LOWCOST, LOWDELAY, THROUGHPUT, RELIABILITY, MINCOST