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-rw-r--r--lib/sockunion.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/sockunion.h b/lib/sockunion.h
index d7d26ba85a..b996735550 100644
--- a/lib/sockunion.h
+++ b/lib/sockunion.h
@@ -83,6 +83,7 @@ extern void sockunion_set(union sockunion *, int family, const uint8_t *addr,
extern union sockunion *sockunion_str2su(const char *str);
extern int sockunion_accept(int sock, union sockunion *);
+extern int sockunion_sizeof(const union sockunion *su);
extern int sockunion_stream_socket(union sockunion *);
extern int sockopt_reuseaddr(int);
extern int sockopt_reuseport(int);