diff options
| author | Alex Henrie <alexhenrie24@gmail.com> | 2024-02-13 23:26:31 -0700 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2024-02-15 15:34:40 +0100 |
| commit | a5fcea2d2f790aa90b6e996d411ae2cf8db55186 (patch) | |
| tree | 8d0eaa45f00bfbffc6b6f8e9dd2c08b5521aca1c /include/linux/ipv6.h | |
| parent | 2aa8f155b09519814e449dc19adacf01fd1367ee (diff) | |
net: ipv6/addrconf: introduce a regen_min_advance sysctl
In RFC 8981, REGEN_ADVANCE cannot be less than 2 seconds, and the RFC
does not permit the creation of temporary addresses with lifetimes
shorter than that:
> When processing a Router Advertisement with a
> Prefix Information option carrying a prefix for the purposes of
> address autoconfiguration (i.e., the A bit is set), the host MUST
> perform the following steps:
> 5. A temporary address is created only if this calculated preferred
> lifetime is greater than REGEN_ADVANCE time units.
However, some users want to change their IPv6 address as frequently as
possible regardless of the RFC's arbitrary minimum lifetime. For the
benefit of those users, add a regen_min_advance sysctl parameter that
can be set to below or above 2 seconds.
Link: https://datatracker.ietf.org/doc/html/rfc8981
Signed-off-by: Alex Henrie <alexhenrie24@gmail.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'include/linux/ipv6.h')
| -rw-r--r-- | include/linux/ipv6.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/ipv6.h b/include/linux/ipv6.h index 5e605e384aac..ef3aa060a289 100644 --- a/include/linux/ipv6.h +++ b/include/linux/ipv6.h @@ -27,6 +27,7 @@ struct ipv6_devconf { __s32 use_tempaddr; __s32 temp_valid_lft; __s32 temp_prefered_lft; + __s32 regen_min_advance; __s32 regen_max_retry; __s32 max_desync_factor; __s32 max_addresses; |