Similar to commit 3b707c3008ca ("net: dev_is_mac_header_xmit() true for ARPHRD_RAWIP"), add ARPHRD_IP6GRE to dev_is_mac_header_xmit(), to make ip6gre compatible with act_mirred and __bpf_redirect(). Signed-off-by: Guillaume Nault <gnault@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>