我正在使用 Raspbian，需要从平板电脑 (Yarvik tab264) 连接 USB 绳索。我正在使用应用程序https://play.google.com/store/apps/details?id=com.mstream.e2t。我可以看到设备 easytether-tap，ip 链接的输出：
pi@raspberrypi ~ $ ip link
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
4: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT qlen 1000 link/ether b8:27:eb:30:34:50 brd ff:ff:ff:ff:ff:ff
5: easytether-tap: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UNKNOWN mode DEFAULT qlen 500
link/ether 02:00:54:74:68:72 brd ff:ff:ff:ff:ff:ff
然而，ping -I easytether-tap 8.8.8.8不起作用。
pi@raspberrypi ~ $ route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 192.168.1.1 0.0.0.0 UG 204 0 0 eth0
0.0.0.0 192.168.117.1 0.0.0.0 UG 205 0 0 easytether-tap
192.168.1.0 0.0.0.0 255.255.255.0 U 204 0 0 eth0
192.168.117.0 0.0.0.0 255.255.255.0 U 205 0 0 easytether-tap
消息
pi@raspberrypi ~ $ dmesg|tail -n 20
[ 30.854092] usb 1-1: new high-speed USB device number 5 using dwc_otg
[ 30.854319] Indeed it is in host mode hprt0 = 00001101
[ 31.244505] usb 1-1: New USB device found, idVendor=0424, idProduct=9512
[ 31.244547] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 31.245844] hub 1-1:1.0: USB hub found
[ 31.246022] hub 1-1:1.0: 3 ports detected
[ 31.524094] usb 1-1.1: new high-speed USB device number 6 using dwc_otg
[ 31.624454] usb 1-1.1: New USB device found, idVendor=0424, idProduct=ec00
[ 31.624496] usb 1-1.1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 31.627743] smsc95xx v1.0.4
[ 31.699219] smsc95xx 1-1.1:1.0 eth0: register 'smsc95xx' at usb-bcm2708_usb-1.1, smsc95xx USB 2.0 Ethernet, b8:27:eb:30:34:50
[ 31.794171] usb 1-1.3: new high-speed USB device number 7 using dwc_otg
[ 31.894936] usb 1-1.3: New USB device found, idVendor=18d1, idProduct=0007
[ 31.894976] usb 1-1.3: New USB device strings: Mfr=2, Product=3, SerialNumber=4
[ 31.894994] usb 1-1.3: Product: Android
[ 31.895014] usb 1-1.3: Manufacturer: USB Developer
[ 31.895031] usb 1-1.3: SerialNumber: 20080411413fc082
[ 32.750603] smsc95xx 1-1.1:1.0 eth0: hardware isn't capable of remote wakeup
[ 34.173661] smsc95xx 1-1.1:1.0 eth0: link up, 100Mbps, full-duplex, lpa 0xCDE1
[ 37.598492] Adding 102396k swap on /var/swap. Priority:-1 extents:2 across:2134012k SSFS
答案1
我和开发商沟通过。此应用程序不通过 ICMP。事实上它只允许 HTTP(S)。