diff --git a/vppbld/patches/0010-ip4-fib-allow-class-e-route-override.patch b/vppbld/patches/0010-ip4-fib-allow-class-e-route-override.patch
new file mode 100644
index 0000000..e01af68
--- /dev/null
+++ b/vppbld/patches/0010-ip4-fib-allow-class-e-route-override.patch
@@ -0,0 +1,18 @@
+diff --git a/src/vnet/fib/ip4_fib.c b/src/vnet/fib/ip4_fib.c
+index 27f23497f..9d5e5331a 100644
+--- a/src/vnet/fib/ip4_fib.c
++++ b/src/vnet/fib/ip4_fib.c
+@@ -59,7 +59,12 @@ static const ip4_fib_table_special_prefix_t ip4_specials[] = {
+ 	    .fp_len   = 4,
+ 	    .fp_proto = FIB_PROTOCOL_IP4,
+ 	},
+-	.ift_source = FIB_SOURCE_SPECIAL,
++	/*
++	 * SONiC VPP uses Class E destinations in dataplane tests and should
++	 * honor explicit/default routes for them instead of forcing a
++	 * platform-only drop.
++	 */
++	.ift_source = FIB_SOURCE_DEFAULT_ROUTE,
+ 	.ift_flag   = FIB_ENTRY_FLAG_DROP,
+ 
+     },
diff --git a/vppbld/patches/series b/vppbld/patches/series
index 5a12867..b9824a2 100644
--- a/vppbld/patches/series
+++ b/vppbld/patches/series
@@ -17,3 +17,5 @@
 0008-bond-drop-stats-track-original-member-interface.patch
 # 9. Add ipip mp2p tunnel
 0009-ipip-add-mp2p-ipip-tunnel.patch
+# 10. Allow SONiC routes to override VPP's Class E default drop
+0010-ip4-fib-allow-class-e-route-override.patch