ZC Error: No buffer space available

[fattaholmanan]

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I'm trying to use pf_ring-zc in a machine with two identical NICs. I can use the zc framework in any of those NICs, but for some reasons I cannot use both NICs at the same time. pfring_zc_open_device returns null with this message: No buffer space available for the second NIC. I'm using following configs:

- cluster_id: 99
- max_pkt_len: 16384
- num_queue_buffers: 49152

And here is the output:

Setup Zero Copy PF_RING. # Active NIC: 0
setting up RX
Cluster Initiated: base_addr=0x7f11b4a00000, size=838860800
#########################################################################
# ERROR: You do not seem to have a valid PF_RING ZC 7.9.0.210621
# license for enp1s0f0 (MAC 0C:C4:7A:A3:25:38) [Intel 10 Gbit ixgbe 82599-based]
# ERROR: Missing license file
# ERROR: Please get one at http://shop.ntop.org/
#########################################################################
# PF_RING ZC running in demo mode (packet capture and transmission
# limited to 5 minutes)
#########################################################################
setting up TX
Cluster Initiated: base_addr=0x7f1182800000, size=838860800
#########################################################################
# ERROR: You do not seem to have a valid PF_RING ZC 7.9.0.210621
# license for enp1s0f0 (MAC 0C:C4:7A:A3:25:38) [Intel 10 Gbit ixgbe 82599-based]
# ERROR: Missing license file
# ERROR: Please get one at http://shop.ntop.org/
#########################################################################
Setup Zero Copy PF_RING. # Active NIC: 1
setting up RX
Cluster Initiated: base_addr=0x7f11b4a00000, size=838860800
#########################################################################
# ERROR: You do not seem to have a valid PF_RING ZC 7.9.0.210621
# license for enp1s0f1 (MAC 0C:C4:7A:A3:25:39) [Intel 10 Gbit ixgbe 82599-based]
# ERROR: Missing license file
# ERROR: Please get one at http://shop.ntop.org/
#########################################################################
rx pfring_zc_open_device error [No buffer space available] Please check that zc:enp1s0f1 is up and not already use

Can you help me what I'm missing?

Thanks, Ali