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-rw-r--r--sysdeps/unix/sysv/linux/bits/in.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/bits/in.h b/sysdeps/unix/sysv/linux/bits/in.h
index 1493541f7e..8efe2427a4 100644
--- a/sysdeps/unix/sysv/linux/bits/in.h
+++ b/sysdeps/unix/sysv/linux/bits/in.h
@@ -112,6 +112,9 @@ struct in_pktinfo
 #define IPV6_ADD_MEMBERSHIP	20
 #define IPV6_DROP_MEMBERSHIP	21
 #define IPV6_ROUTER_ALERT	22
+#define IPV6_MTU_DISCOVER	23
+#define IPV6_MTU		24
+#define IPV6_RECVERR		25
 
 #define SCM_SRCRT		IPV6_RXSRCRT