为何是wlan1不是wlan0?

操作系统版本：debian8 .
这是我的 /etc/network/interfaces文件.

auto dsl-provider
iface dsl-provider inet ppp 
    pre-up /bin/ip link set eth0 up  
    provider dsl-provider
    
auto eth0
    iface eth0 inet static
    address 192.168.22.1
    netmask 255.255.255.0
    dns-server 114.114.114.114
    
auto wlan0
iface wlan0 inet static
    address 192.168.22.2
    netmask 255.255.255.0

ifconfig -a 的结果：

eth0      Link encap:Ethernet  HWaddr e0:3f:49:57:4b:d1  
          inet addr:192.168.22.1  Bcast:192.168.22.255  Mask:255.255.255.0

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host

ppp0      Link encap:Point-to-Point Protocol  
          inet addr:111.28.46.82  P-t-P:111.28.32.1  Mask:255.255.255.255

wlan1     Link encap:Ethernet  HWaddr 00:1a:8c:30:08:b1  
          BROADCAST MULTICAST  MTU:1500  Metric:1

为何是wlan1不是wlan0?

---

我用Debian8的时候是wlan0。

---

device number 是由udev决定的。你可能插过多张无线网卡？
你可以改 /etc/udev/rules.d/70-persistent-net.rules 把 wlan1 改成 wlan0