illumos gate

I have tested this change by creating temporary overlays where the remote end point is one or more OmniOS or SmartOS instances, testing with both the 'direct' and 'files' search plugins. I've also tested between two boxes ONUd to these same bits.

For example, a simple point-to-point overlay can be created as follows:

dladm create-overlay -t \
        -v 142 \
        -e vxlan \
        -s direct \
        -p vxlan/listen_ip=172.27.10.9 \
        -p vxlan/listen_port=4789 \
        -p direct/dest_ip=10.1.0.1 \
        -p direct/dest_port=4789 \
        ov0

dladm create-vnic -t -l ov0 testv0
ipadm create-if -t testv0
ipadm create-addr -t -T static -a local=10.20.30.1/24 testv0/v4

% ssh af@10.20.30.2
(af@10.20.30.2) Password:
OmniOS r151040  omnios-r151040-3239bd100b       January 2022
theeo%

I have tested the files search plugin by linking it into my own overlay network which spans several hosts, but for specific further tests I used this small configuration file:

{
        "2:8:20:f2:b2:70": {
                "arp": "10.20.30.2",
                "ip": "192.168.0.2",
                "port": 4789
        },
        "de:ad:be:ef:00:01": {
                "arp": "10.20.30.4",
                "ip": "192.168.0.1",
                "port": 4789
        }
}

and an overlay created with:

dladm create-overlay -t \
        -v 142 \
        -e vxlan \
        -s files \
        -p vxlan/listen_ip=172.27.10.9 \
        -p vxlan/listen_port=4789 \
        -p files/config=/data/omnios-build/ovtest/config.json \
        ov0