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doc: Update ospf unnumbered documentation

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Update the ospf unnumbered documentation to reflect how
to get it working under linux.

Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
This commit is contained in:
Donald Sharp 2020-01-22 21:46:46 -05:00
parent 3d7660fa85
commit 56f9b9bf15
1 changed files with 6 additions and 0 deletions
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6
doc/user/ospfd.rst
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@ -662,6 +662,12 @@ Interfaces
.. index:: ip ospf network (broadcast|non-broadcast|point-to-multipoint|point-to-point) .. index:: ip ospf network (broadcast|non-broadcast|point-to-multipoint|point-to-point)
.. clicmd:: ip ospf network (broadcast|non-broadcast|point-to-multipoint|point-to-point) .. clicmd:: ip ospf network (broadcast|non-broadcast|point-to-multipoint|point-to-point)
When configuring a point-to-point network on an interface and the interface
has a /32 address associated with then OSPF will treat the interface
as being `unnumbered`. If you are doing this you *must* set the
net.ipv4.conf.<interface name>.rp_filter value to 0. In order for
the ospf multicast packets to be delivered by the kernel.
.. index:: no ip ospf network .. index:: no ip ospf network
.. clicmd:: no ip ospf network .. clicmd:: no ip ospf network