Is UDP header compression (RFC 2508) supported in FreeBSD

Jan Knoppers knoppers at astent.nl
Thu Nov 4 02:26:47 PST 2004


>> Look at the Authors of that RFC.
>> 
>> Compare it with this statement in ppp(8):
>> 
>>          vjcomp
>>              Default: Enabled and Accepted.  This option determines if
>> Van
>>              Jacobson header compression will be used.

My understanding is that this vjcomp statement relates to TCP/IP header
compression only as described in RFC 1144 (Jacobson, V., "TCP/IP Compression
for Low-Speed Serial Links", February 1990). This RFC explicitly excludes
UDP/IP header compression. RFC 2508 is intended to fill this gap.

So, you may very well be right, and I hope you do, but I do not see it
documented.

Jan





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