[LARTC] Clamping tcp mss values to decrease latency

Linux Advanced Routing and Traffic Control

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> > other tcp connections to have the normal full packet size. Enter
> > MSS-clamping. My pppoe client for linux can do mss clamping on every
> > packet that goes out and come in. Not enough control. There is an option
> > to do mss-clamping in iptables, however this only works in the forward
> > table. I can't match and control outgoing web connections, just
> 
> Control and outgoing can be done with regular MTU settings. Just lower the
> MTU size of your ppp interface and the kernel will set a lower MSS
> automatically.

Be VERY careful when doing it. There is too many websites blocking
MTU discovery protocol and you will be no longer able to reach them.
These system maintainers should be shot. :-\
Setting max MSS in route is better way ..

> You can also set MTU per route.

you probably wanted to say MSS here ?
 
devik



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