x/net/ipv4: enable IP_STRIPHDR by default on darwin
According to github.com/opensource-apple/xnu.git, IP_STRIPHDR sticky
socket option was introduced in xnu-517 (Darwin 7.0, OS X 10.3).
LGTM=iant
R=iant, gobot
CC=golang-codereviews
https://golang.org/cl/176480043
diff --git a/ipv4/sys_darwin.go b/ipv4/sys_darwin.go
index 58adf82..3f34734 100644
--- a/ipv4/sys_darwin.go
+++ b/ipv4/sys_darwin.go
@@ -29,6 +29,7 @@
ssoReceiveDst: {sysIP_RECVDSTADDR, ssoTypeInt},
ssoReceiveInterface: {sysIP_RECVIF, ssoTypeInt},
ssoHeaderPrepend: {sysIP_HDRINCL, ssoTypeInt},
+ ssoStripHeader: {sysIP_STRIPHDR, ssoTypeInt},
ssoJoinGroup: {sysIP_ADD_MEMBERSHIP, ssoTypeIPMreq},
ssoLeaveGroup: {sysIP_DROP_MEMBERSHIP, ssoTypeIPMreq},
}
@@ -58,8 +59,6 @@
ctlOpts[ctlPacketInfo].parse = parsePacketInfo
sockOpts[ssoPacketInfo].name = sysIP_RECVPKTINFO
sockOpts[ssoPacketInfo].typ = ssoTypeInt
- sockOpts[ssoStripHeader].name = sysIP_STRIPHDR
- sockOpts[ssoStripHeader].typ = ssoTypeInt
sockOpts[ssoMulticastInterface].typ = ssoTypeIPMreqn
sockOpts[ssoJoinGroup].name = sysMCAST_JOIN_GROUP
sockOpts[ssoJoinGroup].typ = ssoTypeGroupReq
