socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000000040)={<r0=>0xffffffffffffffff, <r1=>0xffffffffffffffff})
write(r0, 0x0, 0x0)
dup2(r1, r0)
sendmmsg$unix(r0, &(0x7f0000003900)=[{{0x0, 0x0, 0x0}}], 0x1, 0x0)