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42f0586d61
GatewayIpAddress and SubnetMask do not exist in old IPv4_DEVICE_PATH, IPAddressOrigin, PrefixLength and GatewayIPAddress do not exist in old IPv6_DEVICE_PATH. This will lead new IScsiDxe to error without updating IPv4_DEVICE_PATH and IPv6_DEVICE_PATH in system. Following UEFI2.5 spec of IPv4_DEVICE_PATH do a check before accessing fields only defined in new version's IPv4_DEVICE_PATH, and revise the same issue for IPv6_DEVICE_PATH in Iscsi driver. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: fanwang2 <fan.wang@intel.com> Reviewed-by: Ye Ting <ting.ye@intel.com> [lersek@redhat.com: rewrapped commit message] Signed-off-by: Laszlo Ersek <lersek@redhat.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18056 6f19259b-4bc3-4df7-8a09-765794883524