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| author | Jay Vosburgh <jay.vosburgh@canonical.com> | 2021-02-08 17:37:01 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-02-09 11:16:03 -0800 |
| commit | 8cf5d8cc3eae2a6324ff81aa5f2f6c2f52bc5cd0 (patch) | |
| tree | fdaa5caf65cad908ad3f903a714fe108bfe2943d | |
| parent | 1e2e61af199652a316d321b0a8f6b08e8dba0b08 (diff) | |
Documentation: networking: ip-sysctl: Document src_valid_mark sysctl
Provide documentation for src_valid_mark sysctl, which was added
in commit 28f6aeea3f12 ("net: restore ip source validation").
Signed-off-by: Jay Vosburgh <jay.vosburgh@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | Documentation/networking/ip-sysctl.rst | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/Documentation/networking/ip-sysctl.rst b/Documentation/networking/ip-sysctl.rst index 83ff5158005a..581bfce86dca 100644 --- a/Documentation/networking/ip-sysctl.rst +++ b/Documentation/networking/ip-sysctl.rst @@ -1446,6 +1446,25 @@ rp_filter - INTEGER Default value is 0. Note that some distributions enable it in startup scripts. +src_valid_mark - BOOLEAN + - 0 - The fwmark of the packet is not included in reverse path + route lookup. This allows for asymmetric routing configurations + utilizing the fwmark in only one direction, e.g., transparent + proxying. + + - 1 - The fwmark of the packet is included in reverse path route + lookup. This permits rp_filter to function when the fwmark is + used for routing traffic in both directions. + + This setting also affects the utilization of fmwark when + performing source address selection for ICMP replies, or + determining addresses stored for the IPOPT_TS_TSANDADDR and + IPOPT_RR IP options. + + The max value from conf/{all,interface}/src_valid_mark is used. + + Default value is 0. + arp_filter - BOOLEAN - 1 - Allows you to have multiple network interfaces on the same subnet, and have the ARPs for each interface be answered |