X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/bca245acd4c03fd752d1a45f011ad495e60fe53d..eb6b6ca394357805f2bdba989abae309f718b4d8:/bsd/net/if_stf.c

diff --git a/bsd/net/if_stf.c b/bsd/net/if_stf.c
index 05e6087ab..5ceab5438 100644
--- a/bsd/net/if_stf.c
+++ b/bsd/net/if_stf.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000-2018 Apple Inc. All rights reserved.
+ * Copyright (c) 2000-2020 Apple Inc. All rights reserved.
  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  *
@@ -571,6 +571,7 @@ stf_pre_output(
 			IFA_REMREF(&ia6->ia_ifa);
 			return ENOBUFS;
 		}
+		*m0 = m;
 	}
 	ip6 = mtod(m, struct ip6_hdr *);
 	tos = (ntohl(ip6->ip6_flow) >> 20) & 0xff;
@@ -604,6 +605,8 @@ stf_pre_output(
 		IFA_REMREF(&ia6->ia_ifa);
 		return ENOBUFS;
 	}
+
+	*m0 = m;
 	ip = mtod(m, struct ip *);
 
 	bzero(ip, sizeof(*ip));