r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
getsockopt$inet6_IPV6_FLOWLABEL_MGR(r0, 0x29, 0x20, &(0x7f0000000040)={@ipv4={'\x00', '\xff\xff', @private}, 0x0, 0x0, 0x0, 0x8}, &(0x7f0000000080)=0x20)