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feat(core): home router NAT after Java, measured with Java FILIUS

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The core translates before the IP thread, as Java's NAT threads sit
between card and Ethernet: out, the WAN address and the entry's port (ICMP
keeps its identifier); in, by remote end, port and protocol, else by the
port forwarding, which then makes a dynamic entry; a ping at the WAN
address is answered by the router, packets from outside for the LAN are
dropped, both sides pass the router's firewall, TTL 1 going out gets time
exceeded. Dynamic entries expire at Java's check each second, 300 s times
the delay factor old (55 minutes at 90 %), refreshed only by what comes in.
The home router forwards as a router does.

Measured and not taken: when a LAN endpoint sends to a second remote end,
Java gives it the entry's WAN port but no entry, and the answer stays at
the router; the core adds an entry for each new remote end on that port.

The oracle now records every card of a node (the second card of routers
was missing); the ARP and RIP runs are recorded anew and still match.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
julian.kiedaisch
2026-09-30 20:06:04 +00:00
co-authored by Claude Opus 5.5
parent 5505e8e8af
commit 7a77bc1b43
23 changed files with 2915 additions and 748 deletions
Download Patch File Download Diff File Expand all files Collapse all files
packages/core/test/scenarios/arp-java-routedPingBehindPing.java.json
+61 -7
View File
@@ -2,7 +2,7 @@
"frames": {
"00000000-0000-0000-0000-000000000301": [
{
"time": 718,
"time": 717,
"source": "02:00:00:00:03:11",
"destination": "FF:FF:FF:FF:FF:FF",
"arp": 1,
@@ -10,7 +10,7 @@
"targetIp": "10.0.0.1"
},
{
"time": 952,
"time": 950,
"source": "02:00:00:00:03:21",
"destination": "02:00:00:00:03:11",
"arp": 2,
@@ -60,7 +60,7 @@
],
"00000000-0000-0000-0000-000000000302": [
{
"time": 838,
"time": 837,
"source": "02:00:00:00:03:11",
"destination": "FF:FF:FF:FF:FF:FF",
"arp": 1,
@@ -68,7 +68,7 @@
"targetIp": "10.0.0.1"
},
{
"time": 840,
"time": 839,
"source": "02:00:00:00:03:21",
"destination": "02:00:00:00:03:11",
"arp": 2,
@@ -86,7 +86,7 @@
"sequence": 2
},
{
"time": 1124,
"time": 1123,
"source": "02:00:00:00:03:11",
"destination": "02:00:00:00:03:21",
"icmp": 8,
@@ -96,7 +96,7 @@
"sequence": 1
},
{
"time": 6570,
"time": 6569,
"source": "02:00:00:00:03:21",
"destination": "02:00:00:00:03:11",
"icmp": 3,
@@ -116,6 +116,60 @@
"sequence": 1
}
],
"00000000-0000-0000-0000-000000000302#1": [
{
"time": 1068,
"source": "02:00:00:00:03:22",
"destination": "FF:FF:FF:FF:FF:FF",
"arp": 1,
"senderIp": "20.0.0.1",
"targetIp": "20.0.0.9"
},
{
"time": 3818,
"source": "02:00:00:00:03:22",
"destination": "FF:FF:FF:FF:FF:FF",
"arp": 1,
"senderIp": "20.0.0.1",
"targetIp": "20.0.0.9"
},
{
"time": 6570,
"source": "02:00:00:00:03:22",
"destination": "FF:FF:FF:FF:FF:FF",
"arp": 1,
"senderIp": "20.0.0.1",
"targetIp": "20.0.0.2"
},
{
"time": 6681,
"source": "02:00:00:00:03:13",
"destination": "02:00:00:00:03:22",
"arp": 2,
"senderIp": "20.0.0.2",
"targetIp": "20.0.0.1"
},
{
"time": 6681,
"source": "02:00:00:00:03:22",
"destination": "02:00:00:00:03:13",
"icmp": 8,
"icmpCode": 0,
"sourceIp": "10.0.0.2",
"destinationIp": "20.0.0.2",
"sequence": 1
},
{
"time": 6792,
"source": "02:00:00:00:03:13",
"destination": "02:00:00:00:03:22",
"icmp": 0,
"icmpCode": 0,
"sourceIp": "20.0.0.2",
"destinationIp": "10.0.0.2",
"sequence": 1
}
],
"00000000-0000-0000-0000-000000000303": [
{
"time": 1124,
@@ -185,7 +239,7 @@
"sendProbe 20.0.0.2 called"
],
[
3763,
3762,
"sendProbe 20.0.0.2 returned null"
]
]