[sr-dev] [kamailio/kamailio] v5.0.4: nathelper: dont ping replicated aor's (#1299)

[Charles Chance]

I suspect, given that the server_id is not showing in the usrloc dump, this is exactly why the server_id filtering is not working.

We need to understand first why server_id is not present, before moving on to the keepalives.

I have run a test locally with two registrar nodes (server_ids 1 and 2) and two subscribers, each registering to a different node.

Output of ul.dump on one of the nodes:

```
{
	Domains: {
		Domain: {
			Domain: location
			Size: 1024
			AoRs: {
				Info: {
					AoR: 123456
					HashID: 924664970
					Contacts: {
						Contact: {
							Address: sip:123456 at 10.8.0.151:5066
							Expires: 33
							Q: -1.000000
							Call-ID: 863771482-5066-1 at BA.I.A.BFB
							CSeq: 21177
							User-Agent: Grandstream GXP2160 1.0.5.33
							Received: [not set]
							Path: [not set]
							State: CS_NEW
							Flags: 0
							CFlags: 0
							Socket: [not set]
							Methods: 7135
							Ruid: uloc-1-5a007f47-206b-11
							Instance: <urn:uuid:00000000-0000-1000-8000-000B825C66C2>
							Reg-Id: 4
							Server-Id: 1
							Tcpconn-Id: -1
							Keepalive: 0
							Last-Keepalive: 1510225981
							Last-Modified: 1510225981
						}
					}
				}
				Info: {
					AoR: 123457
					HashID: 924664971
					Contacts: {
						Contact: {
							Address: sip:123457 at 10.8.0.135:5066
							Expires: 37
							Q: -1.000000
							Call-ID: 1296753078-5066-1 at BA.I.A.BDF
							CSeq: 2000
							User-Agent: Grandstream GXP2100 1.0.8.4
							Received: [not set]
							Path: [not set]
							State: CS_NEW
							Flags: 0
							CFlags: 0
							Socket: udp:10.28.0.21:5060
							Methods: 7135
							Ruid: uloc-2-5a007f22-17c4-1
							Instance: <urn:uuid:00000000-0000-1000-8000-000B823BB51D>
							Reg-Id: 4
							Server-Id: 2
							Tcpconn-Id: -1
							Keepalive: 0
							Last-Keepalive: 1510225985
							Last-Modified: 1510225985
						}
					}
				}
			}
			Stats: {
				Records: 2
				Max-Slots: 1
			}
		}
	}
}
```

As you can see, server_id is present in both contacts and showing the correct value(s).

Can you paste the output (or a snippet) of the same command on one of your nodes?
 

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