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-rw-r--r--proto_arp.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/proto_arp.c b/proto_arp.c
index ba52a0b..9121223 100644
--- a/proto_arp.c
+++ b/proto_arp.c
@@ -45,7 +45,7 @@ struct arphdr {
static void arp(struct pkt_buff *pkt)
{
char *hrd;
- char *pro;
+ const char *pro;
char *opcode;
struct arphdr *arp = (struct arphdr *) pkt_pull(pkt, sizeof(*arp));