On Fri, Mar 17, 2023 at 1:54 AM Christian Marangi <ansuels...@gmail.com> wrote:
>
> We currently setup odhcp service even if the interface is not running.
> This is the case for bridge or specific interface that are flagged as UP
> but have no carrier as nothing is connected to it.
> This cause a similar error like:
>
> Failed to send to ff02::1%br-lan (Address not available)
>
> This is caused by the kernel assigning IPV6 address only when the
> interface is set to IFF_RUNNING.
> A LINK-LOCAL IPV6 address is required for odhcpd_send() to work or every
> request will be rejected.
>
> To fix this setup services only when interface is in IFF_RUNNING state.
> When an interface change state, odhcpd is reloaded and the services are
> correctly setup again.
>
> Signed-off-by: Christian Marangi <ansuels...@gmail.com>
Acked-by: Hans Dedecker <dedec...@gmail.com>
> ---
> src/config.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/src/config.c b/src/config.c
> index 9b1f659..30da879 100644
> --- a/src/config.c
> +++ b/src/config.c
> @@ -1303,7 +1303,7 @@ void odhcpd_reload(void)
>
>
> avl_for_each_element_safe(&interfaces, i, avl, tmp) {
> - if (i->inuse) {
> + if (i->inuse && i->ifflags & IFF_RUNNING) {
> /* Resolve hybrid mode */
> if (i->dhcpv6 == MODE_HYBRID)
> i->dhcpv6 = (master && master->dhcpv6 ==
> MODE_RELAY) ?
> --
> 2.39.2
>
>
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