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tcp.7: Add some version details for 'tcp_ecn' changes 

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This commit is contained in:
Michael Kerrisk 2015-09-11 11:10:55 +02:00
parent b95e7457d2
commit 935181bb5c
1 changed files with 4 additions and 1 deletions
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5
man7/tcp.7
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@ -396,7 +396,7 @@ option.
.\" Since 2.4.0-test7
Enable RFC\ 2883 TCP Duplicate SACK support.
.TP
.IR tcp_ecn " (Integer; default: 2; since Linux 2.4)"
.IR tcp_ecn " (Integer; default: se below; since Linux 2.4)"
.\" Since 2.4.0-test7
Enable RFC\ 3168 Explicit Congestion Notification.
@ -405,12 +405,15 @@ This file can have one of the following values:
.IP 0
Disable ECN.
Neither initiate nor accept ECN.
This was the default up to and including Linux 2.6.30.
.IP 1
Enable ECN when requested by incoming connections and also
request ECN on outgoing connection attempts.
.IP 2
.\" commit 255cac91c3c9ce7dca7713b93ab03c75b7902e0e
Enable ECN when requested by incoming connections,
but do not request ECN on outgoing connections.
This value is supported, and is the default, since Linux 2.6.31.
.RE
.IP
When enabled, connectivity to some destinations could be affected