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notification issues
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+ ubuntu:21.10 added into the pipeline,
- ubuntu:20.10 removed from the pipeline,
+ misc/docker/ubuntu-21.10-amd64/Dockerfile added,
- misc/docker/ubuntu-20.10-amd64/Dockerfile removed.
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Add option 'netlink rx buffer' to specify netlink socket receive buffer
size. Uses SO_RCVBUFFORCE, so it can override rmem_max limit.
Thanks to Trisha Biswas and Michal for the original patches.
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Unfortunately, SOL_NETLINK is both recently added and arch-dependent,
so we cannot just define it.
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Add strict checking for netlink KRT dumps to avoid PMTU cache records
from FNHE table dump along with KRT.
Linux Kernel added FNHE table dump to the netlink API in patch:
https://patchwork.ozlabs.org/project/netdev/patch/8d3b68cd37fb5fddc470904cdd6793fcf480c6c1.1561131177.git.sbrivio@redhat.com/
Therefore, since Linux 5.3 these route cache entries are dumped together
with regular routes during periodic KRT scans, which in some cases may be
huge amount of useless data. This can be avoided by using strict checking
for netlink dumps:
https://lore.kernel.org/netdev/20181008031644.15989-1-dsahern@kernel.org/
The patch mitigates the risk of receiving unknown and potentially large
number of FNHE records that would block BIRD I/O in each sync. There is a
known issue caused by the GRE tunnels on Linux that seems to be creating
one FNHE record for each destination IP address that is routed through
the tunnel, even when the PMTU equals to GRE interface MTU.
Thanks to Tomas Hlavacek for the original patch.
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Kernel uses cloned routes to keep route cache entries, but reports them
together with regular routes. They were skipped implicitly as they
do not have rtm_protocol filled. Add explicit check for cloned flag
and skip such routes explicitly.
Also, improve debug logs of skipped routes.
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The BGP 'free bind' option applies the IP_FREEBIND/IPV6_FREEBIND
socket option for the BGP listening socket.
Thanks to Alexander Zubkov for the idea.
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Add option to socket interface for nonlocal binding, i.e. binding to an
IP address that is not present on interfaces. This behaviour is enabled
when SKF_FREEBIND socket flag is set. For Linux systems, it is
implemented by IP_FREEBIND socket flag.
Minor changes done by commiter.
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Currently, BIRD ignores dead routes to consider them absent. But it also
ignores its own routes and thus it can not correctly manage such routes
in some cases. This patch makes an exception for routes with proto bird
when ignoring dead routes, so they can be properly updated or removed.
Thanks to Alexander Zubkov for the original patch.
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Function nl_parse_multipath() should handle errors internally.
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Lexer expression for bytestring was too loose, accepting also
full-length IPv6 addresses. It should be restricted such that
colon is used between every byte or never.
Fix the regex and also add some test cases for it.
Thanks to Alexander Zubkov for the bugreport
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'registry.labs.nic.cz' -> 'registry.nic.cz' changed
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Add operators .min and .max to find minumum or maximum element in sets
of types: clist, eclist, lclist. Example usage:
bgp_community.min
bgp_ext_community.max
filter(bgp_large_community, [(as1, as2, *)]).min
Signed-off-by: Alexander Zubkov <green@qrator.net>
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Add operators that can be used to pick components from
pair (standard community) or lc (large community) types.
For example:
(10, 20).asn --> 10
(10, 20).data --> 20
(10, 20, 30).asn --> 10
(10, 20, 30).data1 --> 20
(10, 20, 30).data2 --> 30
Signed-off-by: Alexander Zubkov <green@qrator.net>
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The BSD kernel does not support the onlink flag and BIRD does not use
direct routes for next hop validation, instead depends on interface
address ranges. We would like to handle PtMP cases with only host
addresses configured, like:
ifconfig wg0 192.168.0.10/32
route add 192.168.0.4 -iface wg0
route add 192.168.0.8 -iface wg0
To accept BIRD routes with onlink next-hop, like:
route 192.168.42.0/24 via 192.168.0.4%wg0 onlink
BIRD would dismiss the route when receiving from the kernel, as the
next-hop 192.168.0.4 is not part of any interface subnet and onlink
flag is not kept by the BSD kernel.
The commit fixes this by assuming that for routes received from the
kernel, any next-hop is onlink on ifaces with only host addresses.
Thanks to Stefan Haller for the original patch.
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