sendmmsg$inet6(0xffffffffffffffff, &(0x7f0000003e00)=[{{0x0, 0x0, 0x0, 0x0, &(0x7f0000001580)=[@rthdrdstopts={{0x20, 0x29, 0x37, {0x0, 0x0, '\x00', [@generic={0x0, 0x1, "15"}]}}}], 0x20}}], 0x1, 0x0)
io_uring_register$IORING_REGISTER_BUFFERS(0xffffffffffffffff, 0x23, &(0x7f0000001580), 0x0)