diff --git a/content/MP4.EGG b/content/MP4.EGG
new file mode 100644
index 0000000..4c80ec3
--- /dev/null
+++ b/content/MP4.EGG
@@ -0,0 +1,456 @@
+[mission]
+adventure=BattleTech
+map=arena1
+scenario=freeforall
+time=day
+weather=clear
+temperature=27
+length=600
+[ordinals]
+bitmap=Ordinal::BitMap::1
+bitmap=Ordinal::BitMap::2
+bitmap=Ordinal::BitMap::3
+bitmap=Ordinal::BitMap::4
+[Ordinal::BitMap::1]
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+[pilots]
+pilot=10.99.0.1:1502
+pilot=10.99.0.2:1502
+pilot=10.99.0.3:1502
+pilot=10.99.0.4:1502
+[10.99.0.1:1502]
+hostType=0
+advancedDamage=1
+loadzones=1
+name=ALPHA
+bitmapindex=1
+experience=expert
+badge=VGL
+patch=Yellow
+role=Role::Default
+dropzone=one
+vehicle=bhk1
+vehicleValue=1000
+color=White
+[10.99.0.2:1502]
+hostType=0
+advancedDamage=1
+loadzones=1
+name=BRAVO
+bitmapindex=2
+experience=expert
+badge=VGL
+patch=Yellow
+role=Role::Default
+dropzone=one
+vehicle=madcat
+vehicleValue=1000
+color=Crimson
+[10.99.0.3:1502]
+hostType=0
+advancedDamage=1
+loadzones=1
+name=CHARLIE
+bitmapindex=3
+experience=expert
+badge=VGL
+patch=Yellow
+role=Role::Default
+dropzone=one
+vehicle=bhk1
+vehicleValue=1000
+color=Green
+[10.99.0.4:1502]
+hostType=0
+advancedDamage=1
+loadzones=1
+name=DELTA
+bitmapindex=4
+experience=expert
+badge=VGL
+patch=Yellow
+role=Role::Default
+dropzone=one
+vehicle=madcat
+vehicleValue=1000
+color=Tan
+[largebitmap]
+bitmap=BitMap::Large::ALPHA
+bitmap=BitMap::Large::BRAVO
+bitmap=BitMap::Large::CHARLIE
+bitmap=BitMap::Large::DELTA
+[BitMap::Large::ALPHA]
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+x=64
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+[Role::Default]
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diff --git a/context/multiplayer.md b/context/multiplayer.md
index f3101fd..b5f14d1 100644
--- a/context/multiplayer.md
+++ b/context/multiplayer.md
@@ -354,6 +354,19 @@ phase). Plan: `~/.claude/plans/partitioned-snuggling-piglet.md`.
   bitmapindexes. MP_BHMC.EGG template fixed (authentic Aeolus raster preserved bit-exact,
   Boreas generated). Verified: eggmodel self-test 20/20; ASCII-art decode of app-generated
   VIPER/MONGOOSE rasters; live 2-node session on the generated egg.
+- **4-POD SESSION VERIFIED (2026-07-18) [T2 live]**: first >2-player run — 4 pods, relay-assigned
+  seats (no BT_SELF), 4-pilot egg (`content/MP4.EGG`, generated via eggmodel incl. 4 callsign
+  bitmaps): 4 distinct seats, 4/4 registered, launch, all 4 "All connections completed", **every
+  node replicates all 3 foreign mechs** (host-qualified `[repl] mech h:l` sets are exact
+  complements), 4 DISTINCT spawn positions (dropzone=one spreads spawns — no stacking), UDP
+  flowing at 4-pod fan-out rates (relay tx = 3×rx), zero drops, all processes alive. Per-host
+  `[net-rx]` census symmetric (36 NewDynamicEntity makes = mech + subsystem roster from each
+  host to each node). **DIAGNOSTIC TRAP found**: `EntityID::operator int()` returns localID
+  ONLY — a `(long)GetEntityID()` log collapses different hosts' mechs onto one number and fakes
+  "missing replicants" (cost a full false bug-hunt); stream the EntityID object instead
+  (`operator<<` prints `host:local`). [repl] log fixed. Capacity: roster-bound (operator app);
+  relay load-tested to 8 trivially; residual 8-player unknowns: ordinal bitmaps only 1-4 in the
+  egg template (rank graphics 5-8), untested beyond 4 live pods.
 - **STILL UNTESTED (config, not code)**: a real two-physical-machine / internet run (only the
   relay's console+game ports need to be reachable inbound — one forwarded port total; or a
   playit.gg-style tunnel in front of the relay, host-side only).
diff --git a/game/reconstructed/mech4.cpp b/game/reconstructed/mech4.cpp
index 4b5f168..7d1178f 100644
--- a/game/reconstructed/mech4.cpp
+++ b/game/reconstructed/mech4.cpp
@@ -2481,7 +2481,11 @@ void
 				if (s_replLog >= 1.0f)
 				{
 					s_replLog = 0.0f;
-					DEBUG_STREAM << "[repl] mech " << (long)GetEntityID()
+					// print host:local -- the (long) cast collapsed distinct
+					// hosts' mechs onto one number (EntityID::operator int
+					// returns localID only) and faked "missing replicants"
+					// during the first 4-pod session analysis (2026-07-18)
+					DEBUG_STREAM << "[repl] mech " << GetEntityID()
 						<< " pos=(" << localOrigin.linearPosition.x << ", "
 						<< localOrigin.linearPosition.y << ", "
 						<< localOrigin.linearPosition.z << ")"