Re: [PATCH net-next 4/5] ipv6: Compute multipath hash for sent ICMP errors from offending packet

On 24.10.2016 11:28, Jakub Sitnicki wrote:

Improve debuggability with tools like traceroute and make PMTUD work in
setups that make use of ECMP routing by sending ICMP errors down the
same path as the offending packet would travel, if it was going in the
opposite direction.

There is a caveat, flows in both directions need use the same
label. Otherwise packets from flow in the opposite direction and ICMP
errors will not be routed over the same ECMP link.

Export the function for calculating the multipath hash so that we can
use it also on receive side, when forwarding ICMP errors.

Signed-off-by: Jakub Sitnicki <redacted>

Acked-by: Hannes Frederic Sowa <redacted>