HC2VPP-314 - fix for IPV6 routes with 128 subnet prefix

VPP uses byte in range of 0 to 255 but when jni is used
and this type is converted to java byte which has range
of -128 to 127 it will convert it to negative value.
It then fails to create Ip6Prefix from this value.

Change-Id: Ic18686959682c153da2e4ee4a7f7841c9b56e5d3
Signed-off-by: Michal Cmarada <michal.cmarada@pantheon.tech>

1 files changed, 1 insertions, 1 deletions

diff --git a/vpp-common/vpp-translate-utils/src/main/java/io/fd/hc2vpp/common/translate/util/Ipv6Translator.java b/vpp-common/vpp-translate-utils/src/main/java/io/fd/hc2vpp/common/translate/util/Ipv6Translator.java
index 6d939af07..dbfe81d6c 100644
--- a/vpp-common/vpp-translate-utils/src/main/java/io/fd/hc2vpp/common/translate/util/Ipv6Translator.java
+++ b/vpp-common/vpp-translate-utils/src/main/java/io/fd/hc2vpp/common/translate/util/Ipv6Translator.java
@@ -60,7 +60,7 @@ public interface Ipv6Translator extends ByteDataTranslator {
     default byte extractPrefix(Ipv6Prefix data) {
         checkNotNull(data, "Cannot extract from null");
 
-        return Byte.valueOf(data.getValue().substring(data.getValue().indexOf('/') + 1));
+        return Integer.valueOf(data.getValue().substring(data.getValue().indexOf('/') + 1)).byteValue();
     }
 
     /**