socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000040)={<r0=>0xffffffffffffffff})
r1 = dup(r0)
setsockopt$sock_int(r1, 0x1, 0x10, &(0x7f0000000200)=0xbe7, 0x4)
writev(r0, &(0x7f00000004c0)=[{&(0x7f0000000000)='~', 0x1}], 0x1)