r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
r1 = socket$inet(0xa, 0x3, 0xff)
ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000140)={'sit0\x00', <r2=>0x0})
ioctl$sock_inet6_SIOCADDRT(r0, 0x890b, &(0x7f0000000140)={@private0, @empty, @ipv4={'\x00', '\xff\xff', @multicast2}, 0x0, 0x0, 0x0, 0x0, 0x0, 0x400032, r2})