r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
setsockopt$inet6_IPV6_FLOWLABEL_MGR(r0, 0x29, 0x20, &(0x7f00000000c0)={@remote, 0x0, 0x0, 0x1, 0xb, 0x7, 0x200, 0x5000000}, 0x20)