[Ecn-sane] The two SCE tests I have in mind

Jonathan Morton chromatix99 at gmail.com
Sun Mar 24 07:08:33 EDT 2019


> On 24 Mar, 2019, at 12:05 pm, Pete Heist <pete at heistp.net> wrote:
> 
> tcpdump -r file.pcap udp port 2112 and greater 80 and "ip[1] != 0x1”
> 
> “greater 80” ignores the handshake packets and 0x1 is whatever TOS value we want to make sure the packets contain. We can use different filters for other traffic.

Bear in mind that the TOS byte contains ECN as well as DSCP fields, and the latter is left-justified.

 - Jonathan Morton



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