For the record: As mentioned into the mailing-list , adding "options RADIX_MPATH" doesn't allow any more to use ECMP.
The new ip_tryforward (like the previous fastforward) didn't support ECMP: a FreeBSD router sticks to its first route entry and never try the second entry.
Created attachment 206809 [details]
@Olivier I assume this is still an issue in stable/11,12 and CURRENT, can you confirm?
^Triage: Attach patch from Ermal (eri@) on the mailing list thread, which may (likely?) need a re-base against latest CURRENT
Add ae@ to CC as they mentioned some code would need to be written (which was), in case they can assist with review
(In reply to Kubilay Kocak from comment #1)
Yes this is still in issue on stable/11/12/current.