tcpdump mailing list archives

Request for a new DLT


From: "Fulko Hew" <fulko.hew () gmail com>
Date: Tue, 17 Jul 2007 09:02:31 -0400

I am formally requesting a new DLT value to support capture traffic
from my companies LAN/WAN router/protocol converter device.

Since this device supports WAN protocols, this new DLT will be
used to provide/indicate that the data stream contains a
number of WAN port specific pieces of information such as:

- message direction
- hardware signal line states (RTS, CTS, DCD, etc.)
- transmit/receive error/status bits.
- a protocol type indicator (Frame Relay, LAPB, IPARS, UTS, etc.)

This 5 byte header/control-structure will be prefixed to each captured
data packet, but will not be considered as part of the 'data packet'
that will be decoded as part of Wireshark, etc.
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