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Diffstat (limited to 'Documentation/networking/ip-sysctl.txt')
| -rw-r--r-- | Documentation/networking/ip-sysctl.txt | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt index a73b3a02e49a..f4b1043e92ed 100644 --- a/Documentation/networking/ip-sysctl.txt +++ b/Documentation/networking/ip-sysctl.txt @@ -1429,14 +1429,24 @@ flowlabel_state_ranges - BOOLEAN FALSE: disabled Default: true -flowlabel_reflect - BOOLEAN - Automatically reflect the flow label. Needed for Path MTU +flowlabel_reflect - INTEGER + Control flow label reflection. Needed for Path MTU Discovery to work with Equal Cost Multipath Routing in anycast environments. See RFC 7690 and: https://tools.ietf.org/html/draft-wang-6man-flow-label-reflection-01 - TRUE: enabled - FALSE: disabled - Default: FALSE + + This is a mask of two bits. + 1: enabled for established flows + + Note that this prevents automatic flowlabel changes, as done + in "tcp: change IPv6 flow-label upon receiving spurious retransmission" + and "tcp: Change txhash on every SYN and RTO retransmit" + + 2: enabled for TCP RESET packets (no active listener) + If set, a RST packet sent in response to a SYN packet on a closed + port will reflect the incoming flow label. + + Default: 0 fib_multipath_hash_policy - INTEGER Controls which hash policy to use for multipath routes. |