I have just installed factory 19.07.4 on two (2) EA8300 for the purpose of testing your inquiry and for my own knowledge, as I am new to OpenWrt.
They have been updated and are ready for testing, however you will have to instruct me as to how you want these setup to test your issue, as there are so may paths to mesh my head spins.
Please let me know if you want me to move forward with this or if I mesh myself to death on my own :
- Associativity-Based Routing (ABR)[1]
- AODV (Ad hoc On-Demand Distance Vector)
- B.A.T.M.A.N. (Better Approach To Mobile Adhoc Networking)
- Babel (protocol) (a distance-vector routing protocol for IPv6 and IPv4 with fast convergence properties)
- Dynamic NIx-Vector Routing|DNVR[13]
- DSDV (Destination-Sequenced Distance-Vector Routing)
- DSR (Dynamic Source Routing)
- HSLS (Hazy-Sighted Link State)
- HWMP (Hybrid Wireless Mesh Protocol, the default mandatory routing protocol of IEEE 802.11s)
- Infrastructure Wireless Mesh Protocol (IWMP) for Infrastructure Mesh Networks by GRECO UFPB-Brazil[14]
- OLSR (Optimized Link State Routing protocol)
- OORP (OrderOne Routing Protocol) (OrderOne Networks Routing Protocol)
- OSPF (Open Shortest Path First Routing)
- Routing Protocol for Low-Power and Lossy Networks (IETF ROLL RPL protocol, RFC 6550)
- PWRP (Predictive Wireless Routing Protocol)[15]
- TORA (Temporally-Ordered Routing Algorithm)
- ZRP (Zone Routing Protocol)
I understand not all are implemented in OpenWrt, but several are.
I don't mind testing your setup with my 2 EA8300 I am putting aside for my mesh knowledge.