1 :PREROUTING,INPUT,FORWARD,OUTPUT,POSTROUTING 2 *mangle 3 -j TOS --set-tos 0x1f;=;OK 4 -j TOS --set-tos 0x1f/0x1f;=;OK 5 # maximum TOS is 0x1f (5 bits) 6 # ERROR: should fail: iptables -A PREROUTING -t mangle -j TOS --set-tos 0xff 7 # -j TOS --set-tos 0xff;;FAIL 8 -j TOS --set-tos Minimize-Delay;-j TOS --set-tos 0x10;OK 9 -j TOS --set-tos Maximize-Throughput;-j TOS --set-tos 0x08;OK 10 -j TOS --set-tos Maximize-Reliability;-j TOS --set-tos 0x04;OK 11 -j TOS --set-tos Minimize-Cost;-j TOS --set-tos 0x02;OK 12 -j TOS --set-tos Normal-Service;-j TOS --set-tos 0x00;OK 13 -j TOS --and-tos 0x12;-j TOS --set-tos 0x00/0xed;OK 14 -j TOS --or-tos 0x12;-j TOS --set-tos 0x12/0x12;OK 15 -j TOS --xor-tos 0x12;-j TOS --set-tos 0x12/0x00;OK 16 -j TOS;;FAIL 17