clat - turn off spurious log messages caused by IPv6 packets

This eliminates log lines of the form:
  W clatd   : read_packet: unknown packet type = 0x86dd

Test: stuff is much quieter on device
Bug: 129305844
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: I8ee7478b4f956265233ba4e2c4237895607d697c
1 file changed