r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000100), 0xc0e01, 0x0)
ioctl$TCSETSF2(0xffffffffffffffff, 0x402c542d, &(0x7f0000000000)={0x0, 0x0, 0x0, 0x0, 0x7, "0100"})
ioctl$TUNSETQUEUE(r0, 0x400454ca, &(0x7f0000000000)={'veth0_vlan\x00'})
ioctl$TUNSETSNDBUF(r0, 0x400454d4, &(0x7f0000000040)=0x2)
writev(r0, &(0x7f0000000480)=[{&(0x7f00000000c0)="11fa88ca", 0x4}], 0x1)