Got at last my IP fabric running, thanks to the cumulus support.
It is composed of 2 spines et 2 clag'ed leafs (4 switches).
IGP is OSPF, in a unumbered config, L2 networks are transported using Vxlans between clag's
In this setup, do you think it is possible to set-up VRRP config from the 2 clags towards provider infra ?
Not taking the split brain issues into account as the clags will have 1 uplink configured.