net: Check ICMPv6 options length correctly

The options length check was using fragment length to
verify the correctness of options. This is incorrect
as we need to check against the remaining length of the
packet after we have removed IPv6 and ICMPv6 header lengths.

Change-Id: Ied1b19e3f4b1a88409e81a1974ba5a4bdf022e72
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
1 file changed