On Sun, 5 Nov 2000, Barry K. Nathan wrote:
> +CONFIG_INET_ECN
> + Explicit Congestion Notification (ECN) allows routers to notify
> + clients about network congestion, resulting in fewer dropped packets
> + and increased network performance. This option adds ECN support to the
> + Linux kernel, as well as a sysctl (/proc/sys/net/ipv4/tcp_ecn) which
> + allows ECN support to be disabled at runtime.
You might mention the RFC here, 2481 IIRC.
> + Note that, on the Internet, there are many broken firewalls which
> + refuse connections from ECN-enabled machines, and it may be a while
> + before these firewalls are fixed. Until then, to access a site behind
> + such a firewall (some of which are major sites, at the time of this
> + writing) you will have to disable this option, either by saying N now
> + or by using the sysctl.
I'm still not sure why it's been decided not to do fallback or how this
whole situation is any different from path MTU discovery.
--
"Love the dolphins," she advised him. "Write by W.A.S.T.E.."
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