ioctl$FITRIM(0xffffffffffffffff, 0xc0185879, &(0x7f0000000040)={0x0, 0x0, 0x18b})
r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0)
ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f0000000040)={'netdevsim0\x00'})
r1 = openat$full(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
r2 = openat$tun(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0)
ioctl$TUNSETIFF(r2, 0x400454ca, &(0x7f0000000040)={'netdevsim0\x00'})
dup2(r1, r2)