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-rw-r--r--osdep/freebsd_getifmaddrs.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/osdep/freebsd_getifmaddrs.c b/osdep/freebsd_getifmaddrs.c
index 559fdc06..8b174146 100644
--- a/osdep/freebsd_getifmaddrs.c
+++ b/osdep/freebsd_getifmaddrs.c
@@ -1,3 +1,8 @@
+/*
+ this BSD licensed code is from https://github.com/freebsd/freebsd/blob/386ddae58459341ec567604707805814a2128a57/lib/libc/net/getifmaddrs.c
+ as in older OS X there is no getifmaddrs() and related functions is NetBSD
+*/
+
#define NET_RT_IFMALIST 4 /* return multicast address list */
#define RTM_NEWMADDR 0xf /* mcast group membership being added to if */