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Doc: Document issue with import tables 

The import table does not work reliably together with re-evaluation of
routes due to recursive next hops or flowspec validation. We will at
least document that here, as import tables are completely redesigned and
this issue is fixed in BIRD 3.x branch.
This commit is contained in:
Ondrej Zajicek 2022-12-09 22:43:27 +01:00
parent a80cd47074
commit e48f898fda
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@ -2982,6 +2982,13 @@ be used in explicit configuration.
be examined later by <cf/show route/, and can be used to reconfigure
import filters without full route refresh. Default: off.
Note that currently the import table breaks routes with recursive
nexthops (e.g. ones from IBGP, see <ref id="bgp-gateway" name="gateway
recursive">), they are not properly updated after next hop change. For
the same reason, it also breaks re-evaluation of flowspec routes with
<ref id="bgp-validate" name="flowspec validation"> option enabled on
flowspec channels.
<tag><label id="bgp-export-table">export table <m/switch/</tag>
A BGP export table contains all routes sent to given BGP neighbor, after
application of export filters. It is also called <em/Adj-RIB-Out/ in BGP