ovn-trace example

podman exec ovn_controller ovn-trace --summary --db=tcp:172.16.2.198:6642 \
	net0 \
	'
	inport=="10045ad5-a92a-47a4-8369-4cb3abad4978" &&  
	eth.src==fa:16:3e:17:eb:cf &&  
	ip4.src==192.168.17.150 &&  
	ip.ttl==255 &&
	eth.dst==fa:16:3e:c8:44:cc &&
	ip4.dst==8.8.8.8 &&  
	tcp.src==12345 &&  
	tcp.dst==22
	'

ovn-trace output

# tcp,reg14=0x3,vlan_tci=0x0000,dl_src=fa:16:3e:17:eb:cf,dl_dst=fa:16:3e:c8:44:cc,nw_src=192.168.17.150,nw_dst=8.8.8.8,nw_tos=0,nw_ecn=0,nw_ttl=255,tp_src=12345,tp_dst=22,tcp_flags=0
ingress(dp="net0", inport="10045a") {
    next;
    next;
    reg0[0] = 1;
    next;
    ct_next;
    ct_next(ct_state=est|trk /* default (use --ct to customize) */) {
        next;
        outport = "3ef0bd";
        output;
        egress(dp="net0", inport="10045a", outport="3ef0bd") {
            next;
            output;
            /* output to "3ef0bd", type "patch" */;
            ingress(dp="router0", inport="lrp-3ef0bd") {
                next;
                reg9[5] = 1;
                next;
                next;
                ip.ttl--;
                reg0 = 10.1.0.1;
                reg1 = 10.1.0.204;
                eth.src = fa:16:3e:58:b3:27;
                outport = "lrp-b92e75";
                flags.loopback = 1;
                next;
                get_arp(outport, reg0);
                /* MAC binding to 46:b9:7b:44:4a:7e. */
                next;
                next;
                output;
                egress(dp="router0", inport="lrp-3ef0bd", outport="lrp-b92e75") {
                    eth.src = fa:16:3e:3b:d3:81;
                    ct_dnat;
                    ct_dnat /* assuming no un-dnat entry, so no change */ {
                        ct_snat(10.1.0.204);
                        ct_snat(ip4.src=10.1.0.204) {
                            output;
                            /* output to "lrp-b92e75", type "patch" */;
                            ingress(dp="public", inport="b92e75") {
                                next;
                                outport = "_MC_unknown";
                                output;
                                multicast(dp="public", mcgroup="_MC_unknown") {
                                    egress(dp="public", inport="b92e75", outport="5d53ba") {
                                        output;
                                        /* output to "5d53ba", type "localport" */;
                                    };
                                    egress(dp="public", inport="b92e75", outport="provnet-bc6cec") {
                                        output;
                                        /* output to "provnet-bc6cec", type "localnet" */;
                                    };
                                };
                            };
                        };
                    };
                };
            };
        };
    };
};