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-rw-r--r--src/basic/missing.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/basic/missing.h b/src/basic/missing.h
index 87ebd0c80..42bf38da0 100644
--- a/src/basic/missing.h
+++ b/src/basic/missing.h
@@ -1062,6 +1062,10 @@ struct input_mask {
#define IPV6_MIN_MTU 1280
#endif
+#ifndef IPV4_MIN_MTU
+#define IPV4_MIN_MTU 68
+#endif
+
#ifndef IFF_MULTI_QUEUE
#define IFF_MULTI_QUEUE 0x100
#endif