r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000100), 0x2281, 0x0)
pwritev2(r0, &(0x7f0000000180)=[{&(0x7f0000000280)="81", 0x1}], 0x1, 0x0, 0x0, 0x0)