r0 = socket$inet6_udplite(0xa, 0x2, 0x88)
ioctl$sock_ipv6_tunnel_SIOCGETTUNNEL(r0, 0x89f0, &(0x7f0000002b40)={'sit0\x00', &(0x7f0000002ac0)={'syztnl0\x00', 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @ipv4={'\x00', '\xff\xff', @loopback}, @private0}})