From: Paul Donald <newt...@gmail.com> Follow-up fix for bc9d317f2921ae6b529f2c9f8de79b75992e206f
https://www.rfc-editor.org/rfc/rfc4861#page-44 Signed-off-by: Paul Donald <newt...@gmail.com> Reviewed-by: Daniel Golle <dan...@makrotopia.org> --- src/router.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/src/router.c b/src/router.c index 61d0e69..c35180d 100644 --- a/src/router.c +++ b/src/router.c @@ -603,6 +603,13 @@ static int send_router_advert(struct interface *iface, const struct in6_addr *fr valid_lt = iface->dhcp_leasetime; } + if (preferred_lt > valid_lt) { + /* RFC4861 ?? 6.2.1 + This value [AdvPreferredLifetime] MUST NOT be larger than AdvValidLifetime. + */ + preferred_lt = valid_lt; + } + if (minvalid > valid_lt) minvalid = valid_lt; -- 2.44.0
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