socketpair$unix(0x1, 0x1, 0x0, &(0x7f00000000c0)={0xffffffffffffffff, <r0=>0xffffffffffffffff})
r1 = dup(r0)
setsockopt$sock_int(r1, 0x1, 0x20, &(0x7f0000000200), 0x4)