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-rw-r--r--sys/netinet6/in6.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/sys/netinet6/in6.h b/sys/netinet6/in6.h
index b16af5f..39cda5d 100644
--- a/sys/netinet6/in6.h
+++ b/sys/netinet6/in6.h
@@ -132,7 +132,9 @@ struct in6_addr {
#define s6_addr32 __u6_addr.__u6_addr32
#endif
+#ifndef INET6_ADDRSTRLEN
#define INET6_ADDRSTRLEN 46
+#endif
/*
* Socket address for IPv6
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