Joel Scherpelz d860b2e8a7
FROMLIST: net: ipv6: Add sysctl for minimum prefix len acceptable in RIOs ...
This commit adds a new sysctl accept_ra_rt_info_min_plen that
defines the minimum acceptable prefix length of Route Information
Options. The new sysctl is intended to be used together with
accept_ra_rt_info_max_plen to configure a range of acceptable
prefix lengths. It is useful to prevent misconfigurations from
unintentionally blackholing too much of the IPv6 address space
(e.g., home routers announcing RIOs for fc00::/7, which is
incorrect).
[backport of net-next bbea124bc99df968011e76eba105fe964a4eceab]
Bug: 33333670
Test: net_test passes
Signed-off-by: Joel Scherpelz <jscherpelz@google.com >
Acked-by: Lorenzo Colitti <lorenzo@google.com >
Signed-off-by: David S. Miller <davem@davemloft.net >
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Joel Scherpelz
d860b2e8a7
