gistfile1.txt

diff --git a/katran/lib/bpf/balancer_kern.c b/katran/lib/bpf/balancer_kern.c
index 93dca2e..99e7d45 100644
--- a/katran/lib/bpf/balancer_kern.c
+++ b/katran/lib/bpf/balancer_kern.c
@@ -240,7 +240,7 @@ static inline int process_l3_headers(struct packet_description *pckt,
 __attribute__((__always_inline__))
 static inline int process_encaped_pckt(void **data, void **data_end,
                                        struct xdp_md *xdp, bool *is_ipv6,
-                                       __u8 *protocol) {
+                                       __u8 *protocol, bool pass) {
   int action;
   if (*protocol == IPPROTO_IPIP) {
     if (*is_ipv6) {
@@ -276,6 +276,10 @@ static inline int process_encaped_pckt(void **data, void **data_end,
   if (action >= 0) {
     return action;
   }
+  if (pass) {
+    // pass packet to kernel after decapsulation
+    return XDP_PASS;
+  }
   return recirculate(xdp);
 }
 #endif // INLINE_DECAP
@@ -306,6 +310,7 @@ static inline int process_packet(void *data, __u64 off, void *data_end,
 
   #ifdef INLINE_DECAP
   if (protocol == IPPROTO_IPIP || protocol == IPPROTO_IPV6) {
+    bool pass = true;
     struct address dst_addr = {};
     if (is_ipv6) {
       memcpy(dst_addr.addrv6, pckt.flow.dstv6, 16);
@@ -320,10 +325,11 @@ static inline int process_packet(void *data, __u64 off, void *data_end,
       if (!data_stats) {
         return XDP_DROP;
       }
+      pass = false;
       data_stats->v1 += 1;
     }
 
-    return process_encaped_pckt(&data, &data_end, xdp, &is_ipv6, &protocol);
+    return process_encaped_pckt(&data, &data_end, xdp, &is_ipv6, &protocol, pass);
   }
   #endif // INLINE_DECAP
 
diff --git a/katran/lib/testing/KatranOptionalTestFixtures.h b/katran/lib/testing/KatranOptionalTestFixtures.h
index feb7e10..f7a1f89 100644
--- a/katran/lib/testing/KatranOptionalTestFixtures.h
+++ b/katran/lib/testing/KatranOptionalTestFixtures.h
@@ -112,6 +112,19 @@ const TestFixture inputOptionalTestFixtures = {
     "AgAAAAAAAQAAAAAAht1gAAAAAEspQAEAAAAAAAAAAAAAAAAAAGT8ABQEAAAAAAAAAAAAAAABYAAAAAAjBgH8ACMHAAEAAAAAAAAAAAAC/AAAAQAAAAAAAAAAAAAAAXppAFAAAAAAAAAAAFAQIADaSAAAa2F0cmFuIHRlc3QgcGt0",
     "ip6ip6 inline decap ttl 1. INLINE_DECAP is required"
   },
+  //15
+  {
+    //Ether(src="0x1", dst="0x2")/IPv6(src="100::64", dst="fc00:1404::2")/IP(src="192.168.1.3", dst="10.200.1.1")/UDP(sport=31337, dport=80)/"katran test pkt"
+    "AgAAAAAAAQAAAAAAht1gAAAAACsEQAEAAAAAAAAAAAAAAAAAAGT8ABQEAAAAAAAAAAAAAAACRQAAKwABAABAEa1NwKgBAwrIAQF6aQBQABeX3GthdHJhbiB0ZXN0IHBrdA==",
+    "ip4ip6 dst is not decap VIP. INLINE_DECAP is required"
+  },
+  //16
+  {
+    //Ether(src="0x1", dst="0x2")/IPv6(src="100::64", dst="fc00:1404::2")/IPv6(src="fc00:2307:1::2", dst="fc00:1::1")/TCP(sport=31337, dport=80,flags="A")/"katran test pkt"
+    "AgAAAAAAAQAAAAAAht1gAAAAAEspQAEAAAAAAAAAAAAAAAAAAGT8ABQEAAAAAAAAAAAAAAACYAAAAAAjBkD8ACMHAAEAAAAAAAAAAAAC/AAAAQAAAAAAAAAAAAAAAXppAFAAAAAAAAAAAFAQIADaSAAAa2F0cmFuIHRlc3QgcGt0",
+    "ip6ip6 dst is not decap VIP. INLINE_DECAP is required"
+  },
+
 };
 
 const TestFixture outputOptionalTestFixtures = {
@@ -185,6 +198,16 @@ const TestFixture outputOptionalTestFixtures = {
     "AgAAAAAAAQAAAAAAht1gAAAAACMGAPwAIwcAAQAAAAAAAAAAAAL8AAABAAAAAAAAAAAAAAABemkAUAAAAAAAAAAAUBAgANpIAABrYXRyYW4gdGVzdCBwa3Q=",
     "XDP_DROP"
   },
+  //15
+  {
+    "AgAAAAAAAQAAAAAACABFAAArAAEAAD8Rrk3AqAEDCsgBAXppAFAAF5fca2F0cmFuIHRlc3QgcGt0",
+    "XDP_PASS"
+  },
+  //16
+  {
+    "AgAAAAAAAQAAAAAAht1gAAAAACMGP/wAIwcAAQAAAAAAAAAAAAL8AAABAAAAAAAAAAAAAAABemkAUAAAAAAAAAAAUBAgANpIAABrYXRyYW4gdGVzdCBwa3Q=",
+    "XDP_PASS"
+  },
 };
 
 }