I've not seen it implemented as a daemon, generally it's implemented in the kernel as Path MTU discovery.
I suspected it would be in the kernel- the discovery method working on ever dial-up connection made would get a little irritating, since it would slow things down initially (as it tested the network path)
What is advmss?
But there are unfortunately many networks that don't play nice with this.
Interesting. An example, and why? Sorry, I'm in ultra-inquisitive mode.
Ricardo PS. Anyone fancy GIVING me £3000 so I can go back to university? Anyone? Anyone? oh. Oh well!
on Thu, Apr 04, 2002 at 09:53:29AM +0000, Ricardo Campos wrote:
I suspected it would be in the kernel- the discovery method working on ever dial-up connection made would get a little irritating, since it would slow things down initially (as it tested the network path)
I think it should be possible to run PMTU in parallel with any connection. The connection just assumes a small MTU (~500) until PMTU has some results or gives up.
What is advmss?
When a TCP connection starts, sometimes it contains an option, for each direction of the connection, specifying the maximum segment size.