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-rw-r--r--include/libmnl/libmnl.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/libmnl/libmnl.h b/include/libmnl/libmnl.h
index f658428..0442d05 100644
--- a/include/libmnl/libmnl.h
+++ b/include/libmnl/libmnl.h
@@ -49,7 +49,7 @@ extern struct nlmsghdr *mnl_nlmsg_next(const struct nlmsghdr *nlh, int *len);
extern int mnl_nlmsg_seq_ok(const struct nlmsghdr *nlh, unsigned int seq);
/* Netlink portID checking */
-int mnl_nlmsg_portid_ok(const struct nlmsghdr *nlh, unsigned int portid);
+extern int mnl_nlmsg_portid_ok(const struct nlmsghdr *nlh, unsigned int portid);
/* Netlink message getters */
extern void *mnl_nlmsg_get_payload(const struct nlmsghdr *nlh);