Warning in bgp: Node l1 has IBGP sessions but no IGP
... Add a supported IGP (ospf, isis, eigrp) to the list of modules.

Warning in bgp: Node l2 has IBGP sessions but no IGP
Errors encountered while processing 13-vxlan-ebgp-allowas.yml
IncorrectValue in bgp.session: Attribute allowas_in used on BGP neighbor spine is not supported by node l1 (device dellos10)
Fatal error in netlab: Cannot proceed beyond this point due to errors, exiting