pipe(&(0x7f0000000040)={0xffffffffffffffff, <r0=>0xffffffffffffffff})
ioctl$int_in(r0, 0x5421, &(0x7f0000000000)=0x8)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000080)={<r1=>0xffffffffffffffff, <r2=>0xffffffffffffffff})
r3 = socket$inet_udp(0x2, 0x2, 0x0)
dup3(r3, r1, 0x0)
splice(r2, 0x0, r0, 0x0, 0x801, 0x0)