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RA learned prefix added to routing table is not deleted on ra route flush

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Hi All,
      When I enabled Router Advertisement on the interface on which I want
to receive RA, the received prefix was added to the routing table. The
default route was added with the tag "ra" but not the prefix.

$ip -6 route
::1 dev lo proto kernel metric 256 pref medium
*fdxx:xxxx:xxxx:xxxx::/64* dev ens192 proto kernel metric 256 expires
2591996sec pref medium
fe80::/64 dev ens192 proto kernel metric 256 pref medium
default via fe80::xxx:xxxx:xxxx:xxxx dev ens192 proto *ra* metric 1024
expires 1796sec hoplimit 64 pref medium

When I flush the ra learned routes using the following command, only the
default route gets removed. Why doesn't the prefix which is *bolded* above
get deleted too? It is marked as added by the *kernel*, but the kernel
added it because it came from an RA.

*sudo ip -6 route flush protocol ra*.

::1 dev lo proto kernel metric 256 pref medium
*fdxx:xxxx:xxxx:xxxx::/64* dev ens192 proto kernel metric 256 expires
2591996sec pref medium
fe80::/64 dev ens192 proto kernel metric 256 pref medium

Dheeraj

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Thread

RA learned prefix added to routing table is not deleted on ra route flush Dheeraj Kandula <dkandula@gmail.com> - 2022-06-24 17:20 +0200
  Re: RA learned prefix added to routing table is not deleted on ra  route flush Marc Haber <mh+debian-ipv6@zugschlus.de> - 2022-06-25 07:40 +0200
    Re: RA learned prefix added to routing table is not deleted on ra  route flush Dheeraj Kandula <dkandula@gmail.com> - 2022-06-27 22:20 +0200
      Re: RA learned prefix added to routing table is not deleted on ra  route flush Marc Haber <mh+debian-ipv6@zugschlus.de> - 2022-06-28 12:50 +0200

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