r0 = socket$inet6_udp(0xa, 0x2, 0x0)
socketpair$unix(0x1, 0x5, 0x0, &(0x7f00000000c0)={<r1=>0xffffffffffffffff})
r2 = dup3(r1, r0, 0x0)
ioctl$int_in(r2, 0x5421, &(0x7f0000000000)=0x100)
sendto$unix(r1, 0x0, 0x0, 0x0, 0x0, 0x0)