illumos gate

Tested by using the updated snoop to inspect VXLAN traffic with various detail flags:

# snoop -rd igb3 udp port 4789
Using device igb3 (promiscuous mode)
172.27.27.79 -> 172.27.27.78 VXLAN VNI=10
172.27.27.78 -> 172.27.27.79 VXLAN VNI=10

# snoop -vrd igb3 udp port 4789
Using device igb3 (promiscuous mode)
ETHER:  ----- Ether Header -----
ETHER:
ETHER:  Packet 1 arrived at 10:02:24.17338
ETHER:  Packet size = 92 bytes
ETHER:  Destination = ec:f4:bb:d5:d2:bb,
ETHER:  Source      = ec:f4:bb:d5:cf:2b,
ETHER:  Ethertype = 0800 (IP)
ETHER:
IP:   ----- IP Header -----
IP:
IP:   Version = 4
IP:   Header length = 20 bytes
IP:   Type of service = 0x00
IP:         xxx. .... = 0 (precedence)
IP:         ...0 .... = normal delay
IP:         .... 0... = normal throughput
IP:         .... .0.. = normal reliability
IP:         .... ..0. = not ECN capable transport
IP:         .... ...0 = no ECN congestion experienced
IP:   Total length = 78 bytes
IP:   Identification = 8103
IP:   Flags = 0x0
IP:         .0.. .... = may fragment
IP:         ..0. .... = last fragment
IP:   Fragment offset = 0 bytes
IP:   Time to live = 60 seconds/hops
IP:   Protocol = 17 (UDP)
IP:   Header checksum = 0000
IP:   Source address = 172.27.27.78, 172.27.27.78
IP:   Destination address = 172.27.27.79, 172.27.27.79
IP:   No options
IP:
UDP:  ----- UDP Header -----
UDP:
UDP:  Source port = 49333
UDP:  Destination port = 4789 (VXLAN)
UDP:  Length = 58
UDP:  Checksum = 8F1F
UDP:
VXLAN:  ----- VXLAN Header -----
VXLAN:
VXLAN:  Flags = 0x08000000
VXLAN:        .... 1... = vni present
VXLAN:  VXLAN network id (VNI) = 10
VXLAN:
ETHER:  ----- Ether Header -----
ETHER:
ETHER:  Packet 1 arrived at 10:02:24.17338
ETHER:  Packet size = 42 bytes
ETHER:  Destination = ff:ff:ff:ff:ff:ff, (broadcast)
ETHER:  Source      = 2:8:20:4b:63:b7,
ETHER:  Ethertype = 0806 (ARP)
ETHER:
ARP:  ----- ARP/RARP Frame -----
ARP:
ARP:  Hardware type = 1 (Ethernet (10Mb))
ARP:  Protocol type = 0800 (IP)
ARP:  Length of hardware address = 6 bytes
ARP:  Length of protocol address = 4 bytes
ARP:  Opcode 1 (ARP Request)
ARP:  Sender's hardware address = 2:8:20:4b:63:b7
ARP:  Sender's protocol address = 172.27.10.199, 172.27.10.199
ARP:  Target hardware address = ?
ARP:  Target protocol address = 172.27.10.199, 172.27.10.199
ARP:

# snoop -Vrd igb3 udp port 4789
Using device igb3 (promiscuous mode)
________________________________
 172.27.10.9 -> 172.27.10.254 ETHER Type=0800 (IP), size=92 bytes
 172.27.10.9 -> 172.27.10.254 IP  D=172.27.27.78 S=172.27.27.79 LEN=78, ID=43301, TOS=0x0, TTL=60
 172.27.10.9 -> 172.27.10.254 UDP D=4789 S=49296 LEN=58
 172.27.10.9 -> 172.27.10.254 VXLAN VNI=10
 172.27.10.9 -> 172.27.10.254 ETHER Type=0806 (ARP), size=42 bytes
 172.27.10.9 -> 172.27.10.254 ARP R 172.27.10.9, 172.27.10.9 is 2:8:20:10:1c:b6