ci: Add Test asymmetric ipv6 routing for parameter --oiface

diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 4d283e88c82fc08ff587dbe7cf7d94a2ed24865f..69c72398604b24eeb6cdd6cb1df06ab487bd3657 100644 (file)
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -87,6 +87,9 @@ jobs:
       - name: Test asymmetric routing (--oiface)
         run: sudo ci/test-oiface.sh
 
+      - name: Test asymmetric ipv6 routing (--oiface)
+        run: sudo ci/test-oiface-ipv6.sh
+
   Test-Mac:
     runs-on: macos-latest
     steps:

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 198782333350920c0f863d8fa91c644d66a3fce8..4b3942ae60aebbd001d75c5b3e1709bb160cd891 100644 (file)
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -18,6 +18,7 @@ Next
 - Move option parsing to a separate file fping.c and fping.h (#458, thanks @gsnw-sebast)
 - Add IBM i PASE detection (#466, thanks @acerbis and @gsnw-sebast)
 - ci: Update autoconf to version 2.73 (#467, thanks @gsnw-sebast)
+- ci: Add Test asymmetric ipv6 routing [--oiface] (#468, thanks @gsnw-sebast)
 
 fping 5.5 (2025-12-31)
 ======================

diff --git a/ci/test-oiface-ipv6.sh b/ci/test-oiface-ipv6.sh
new file mode 100755 (executable)
index 0000000..f338552
--- /dev/null
+++ b/ci/test-oiface-ipv6.sh
@@ -0,0 +1,77 @@
+#!/bin/bash
+set -ex
+
+NS_TESTER="tester_ns_v6"
+NS_TARGET="target_ns_v6"
+LOG_FILE=$(mktemp /tmp/asym_trace_v6.XXXXXX.log)
+
+cleanup() {
+    echo "--- FINALER TRACE-LOG (IPv6) ---"
+    [ -f "$LOG_FILE" ] && cat "$LOG_FILE"
+    sudo ip netns del "$NS_TESTER" 2>/dev/null || true
+    sudo ip netns del "$NS_TARGET" 2>/dev/null || true
+}
+trap cleanup EXIT
+
+sudo ip netns add "$NS_TESTER"
+sudo ip netns add "$NS_TARGET"
+
+sudo ip link add veth1_tst type veth peer name veth1_trg
+sudo ip link add veth2_tst type veth peer name veth2_trg
+
+sudo ip link set veth1_tst netns "$NS_TESTER"
+sudo ip link set veth2_tst netns "$NS_TESTER"
+sudo ip link set veth1_trg netns "$NS_TARGET"
+sudo ip link set veth2_trg netns "$NS_TARGET"
+
+sudo ip netns exec "$NS_TESTER" ip addr add 2001:db8:1::1/64 dev veth1_tst
+sudo ip netns exec "$NS_TESTER" ip addr add 2001:db8:2::1/64 dev veth2_tst
+sudo ip netns exec "$NS_TARGET" ip addr add 2001:db8:1::2/64 dev veth1_trg
+sudo ip netns exec "$NS_TARGET" ip addr add 2001:db8:2::2/64 dev veth2_trg
+
+sudo ip netns exec "$NS_TESTER" ip link set veth1_tst up
+sudo ip netns exec "$NS_TESTER" ip link set veth2_tst up
+sudo ip netns exec "$NS_TESTER" ip link set lo up
+sudo ip netns exec "$NS_TARGET" ip link set veth1_trg up
+sudo ip netns exec "$NS_TARGET" ip link set veth2_trg up
+sudo ip netns exec "$NS_TARGET" ip link set lo up
+
+echo "--- Configuration for asymmetric routing (IPv6) ---"
+for ns in $NS_TESTER $NS_TARGET; do
+    sudo ip netns exec "$ns" sysctl -w net.ipv6.conf.all.forwarding=1
+    sudo ip netns exec "$ns" sysctl -w net.ipv6.conf.all.accept_ra=0
+    
+    for dev in $(sudo ip netns exec "$ns" ls /sys/class/net/); do
+        sudo ip netns exec "$ns" sysctl -w net.ipv6.conf.$dev.forwarding=1 2>/dev/null || true
+    done
+done
+
+T_MAC2=$(sudo ip netns exec "$NS_TARGET" cat /sys/class/net/veth2_trg/address)
+sudo ip netns exec "$NS_TESTER" ip -6 neigh add 2001:db8:2::2 lladdr "$T_MAC2" dev veth2_tst
+
+echo "--- Tests ---"
+sudo ip netns exec "$NS_TESTER" tcpdump -i any icmp6 -n -l > $LOG_FILE 2>&1 &
+TCP_PID=$!
+sleep 2
+
+echo "Send fping6 (asymmetry check)..."
+sudo ip netns exec "$NS_TESTER" "$(dirname "$0")/../src/fping" -6 -c 1 -t 1000 --oiface veth2_tst -S 2001:db8:1::1 2001:db8:2::2 || true
+
+sleep 1
+sudo kill $TCP_PID 2>/dev/null || true
+sleep 1
+
+echo "--- Analysis ---"
+
+REQ_OK=$(grep "veth2_tst Out IP6 2001:db8:1::1 > 2001:db8:2::2" "$LOG_FILE" | wc -l)
+REP_OK=$(grep "veth1_tst In  IP6 2001:db8:2::2 > 2001:db8:1::1" "$LOG_FILE" | wc -l)
+
+if [ "$REQ_OK" -gt 0 ] && [ "$REP_OK" -gt 0 ]; then
+    echo "RESULT: TEST SUCCESSFUL (IPv6 True asymmetry detected)"
+    exit 0
+else
+    echo "RESULT: TEST FAILED"
+    [ "$REQ_OK" -eq 0 ] && echo "- The IPv6 request was not sent via veth2_tst."
+    [ "$REP_OK" -eq 0 ] && echo "- The IPv6 reply was not received via veth1_tst."
+    exit 1
+fi
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