Does the virbr0 or other virtual NIC affect the ring building of NCCL?

Hello, i try to used the NCCL to transfer data between multi-servers, when the NCCL build the communication ring, it will has an error on the virbr0, i analysis the source code find that the topo build by NCCL for virtial NIC is strange, so i want to know that whether NCCL handle the virtual NIC or not?