Hi Benoit, one more thing, Im not sure whats the current support for v6, specially for ND.

Best regards.

Santi


On 3/17/25 16:48, Santiago Martinez wrote:

Hi Benoit,

I have a similar setup to yours (not using MLX4), and it works.

I have two VMs acting as routers (R-A and R-B), each with two interfaces.

On Router-A:

  * VTNET1 → P2P to Router-B.
  * VTNET0 → Sub-interface (VLAN 333) - Client-A.
  * VXLAN0 → Towards Router-B.
  * BR-TEST → VXLAN0 and VTNET0.333 as members.

On Router-B:

  * VTNET1 → P2P to Router-A.
  * VTNET0 → Untagged - Client-B.
  * VXLAN0 → Towards Router-A.
  * BR-TEST → VXLAN0 and VTNET0 as members.

Traffic passes.

One thing to note—VXLAN0 will appear as UP/Active even if it’s not reaching the other side.

Best regards,
Santi


On 3/17/25 15:32, Benoit Chesneau wrote:
Hi all,

I'm trying to make some kind of cross connect between a vlan and a vxlan, but 
as far as I  understand the mac address are not learnt from the vlan When I 
listen using tcpdump on the vlan i can see the arp request but not in the in 
the vxlan. ANy idea how should I fix this? Is there any other way to do a cross 
conect or shoud I go back to not use sriov when i need to build bridges?


Any idea is welcome.

Benoit

More details follow

The vlan is created over a VF device in  a bhyve vm:

vlan601: flags=1008943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST,LOWER_UP> 
metric 0 mtu 1356
         options=18080000<LINKSTATE,TXTLS4,TXTLS6>
         ether 4a:75:f1:f5:a5:0a
         inet6 fe80::4875:f1ff:fef5:a50a%vlan601 prefixlen 64 scopeid 0x5
         groups: vlan
         vlan: 601 vlanproto: 802.1q vlanpcp: 0 parent interface: mce0
         media: Ethernet 25GBase-SR <full-duplex,rxpause,txpause>
         status: active
         nd6 options=23<PERFORMNUD,ACCEPT_RTADV,AUTO_LINKLOCAL>

The vxlan is

vxlan0: flags=1008903<UP,BROADCAST,PROMISC,SIMPLEX,MULTICAST,LOWER_UP> metric 0 
mtu 1356
         options=80020<JUMBO_MTU,LINKSTATE>
         ether 58:9c:fc:10:12:01
         inet6 fe80::5a9c:fcff:fe10:1201%vxlan0 prefixlen 64 tentative scopeid 
0x7
         groups: vxlan
         vxlan vni 400 local [2001:db8:1000::1]:4789 remote 
[2001:db8:1000::2]:4789
         media: Ethernet autoselect (autoselect <full-duplex>)
         status: active
         nd6 options=23<PERFORMNUD,ACCEPT_RTADV,AUTO_LINKLOCAL>


And the bridge:

# ifconfig bridge0
bridge0: 
flags=1028943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST,PPROMISC,LOWER_UP> 
metric 0 mtu 1356
         options=0
         ether 58:9c:fc:10:ff:d3
         id 00:00:00:00:00:00 priority 32768 hellotime 2 fwddelay 15
         maxage 20 holdcnt 6 proto rstp maxaddr 2000 timeout 1200
         root id 00:00:00:00:00:00 priority 32768 ifcost 0 port 0
         member: vlan601 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
                 ifmaxaddr 0 port 5 priority 128 path cost 800
         member: vxlan0 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
                 ifmaxaddr 0 port 7 priority 128 path cost 55
         groups: bridge
         nd6 options=3<PERFORMNUD,ACCEPT_RTADV>

The PF on the machine is a Mellanox [ConnectX-4 Lx

#  pciconf -lvbce mlx5_core0
mlx5_core0@pci0:17:0:0: class=0x020000 rev=0x00 hdr=0x00 vendor=0x15b3 
device=0x1015 subvendor=0x1590 subdevice=0x00d4
     vendor     = 'Mellanox Technologies'
     device     = 'MT27710 Family [ConnectX-4 Lx]'
     class      = network
     subclass   = ethernet
     bar   [10] = type Prefetchable Memory, range 64, base 0xe4000000, size 
33554432, enabled
     cap 10[60] = PCI-Express 2 endpoint max data 256(512) FLR RO NS
                  max read 4096
                  link x8(x8) speed 8.0(8.0) ASPM L1(L1)
     cap 03[48] = VPD
     cap 11[9c] = MSI-X supports 64 messages, enabled
                  Table in map 0x10[0x2000], PBA in map 0x10[0x3000]
     cap 09[c0] = vendor (length 24)
     cap 01[40] = powerspec 3  supports D0 D3  current D0
     ecap 0001[100] = AER 1 0 fatal 0 non-fatal 1 corrected
     ecap 000e[150] = ARI 1
     ecap 0010[180] = SR-IOV 1 IOV enabled, Memory Space enabled, ARI enabled
                      8 VFs configured out of 16 supported
                      First VF RID Offset 0x0002, VF RID Stride 0x0001
                      VF Device ID 0x1016
                      Page Sizes: 4096 (enabled), 8192, 16384, 32768, 65536, 
131072, 262144, 524288, 1048576, 2097152, 4194304
     iov bar  [1a4] = type Prefetchable Memory, range 64, base 0xc7ffe000000, 
size 1048576, enabled
     ecap 0019[1c0] = PCIe Sec 1 lane errors 0
     ecap 000d[230] = ACS 1 Source Validation unavailable, Translation Blocking 
unavailable
                      P2P Req Redirect unavailable, P2P Cmpl Redirect 
unavailable
                      P2P Upstream Forwarding unavailable, P2P Egress Control 
unavailable
                      P2P Direct Translated unavailable, Enhanced Capability 
unavailable
   PCI-e errors = Correctable Error Detected
                  Unsupported Request Detected
      Corrected = Advisory Non-Fatal Error

Other side is the same except that the card is an intel one:

#  pciconf -lvbce ixl0
ixl0@pci0:23:0:0:       class=0x020000 rev=0x02 hdr=0x00 vendor=0x8086 
device=0x1572 subvendor=0x15d9 subdevice=0x093b
     vendor     = 'Intel Corporation'
     device     = 'Ethernet Controller X710 for 10GbE SFP+'
     class      = network
     subclass   = ethernet
     bar   [10] = type Prefetchable Memory, range 64, base 0xc4800000, size 
8388608, enabled
     bar   [1c] = type Prefetchable Memory, range 64, base 0xc5808000, size 
32768, enabled
     cap 01[40] = powerspec 3  supports D0 D3  current D0
     cap 05[50] = MSI supports 1 message, 64 bit, vector masks
     cap 11[70] = MSI-X supports 129 messages, enabled
                  Table in map 0x1c[0x0], PBA in map 0x1c[0x1000]
     cap 10[a0] = PCI-Express 2 endpoint max data 256(2048) FLR RO
                  max read 512
                  link x8(x8) speed 8.0(8.0)
     cap 03[e0] = VPD
     ecap 0001[100] = AER 2 0 fatal 0 non-fatal 1 corrected
     ecap 0003[140] = Serial 1 b8f678ffff55c27c
     ecap 000e[150] = ARI 1
     ecap 0010[160] = SR-IOV 1 IOV enabled, Memory Space enabled, ARI enabled
                      16 VFs configured out of 64 supported
                      First VF RID Offset 0x0010, VF RID Stride 0x0001
                      VF Device ID 0x154c
                      Page Sizes: 4096 (enabled), 8192, 65536, 262144, 1048576, 
4194304
     iov bar  [184] = type Prefetchable Memory, range 64, base 0xc5000000, size 
65536, enabled
     iov bar  [190] = type Prefetchable Memory, range 64, base 0xc5100000, size 
16384, enabled
     ecap 0017[1a0] = TPH Requester 1
     ecap 000d[1b0] = ACS 1 Source Validation unavailable, Translation Blocking 
unavailable
                      P2P Req Redirect unavailable, P2P Cmpl Redirect 
unavailable
                      P2P Upstream Forwarding unavailable, P2P Egress Control 
unavailable
                      P2P Direct Translated unavailable, Enhanced Capability 
unavailable
     ecap 0019[1d0] = PCIe Sec 1 lane errors 0
   PCI-e errors = Correctable Error Detected
                  Unsupported Request Detected
      Corrected = Advisory Non-Fatal Error

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