r0 = socket$unix(0x1, 0x5, 0x0)
bind$unix(r0, &(0x7f00000001c0)=@file={0x1, './file0\x00'}, 0x6e)
listen(r0, 0x0)
r1 = dup2(r0, r0)
setsockopt$sock_int(r1, 0x1, 0x20, &(0x7f0000000080), 0x4)