Thanks, Muranaka-san,
There's no problem to understand your screenshot.
It seems my question is not clear enough.
I do some experiments with VirtualBox 4.2.18 r88780
1.
build-20130228 ISO (android 4.2)
It works fine behind a proxy to access internet by NAT(eth0) and host-only(eth1)
2.
Build 20130725 ISO (android 4.3)
a. It works fine without proxy when enables NAT but disable host-only.
- I using the command " netcfg eth1 down" to disable eth1(host-only).
- I guess you're this kind of environment?
b. It didn't work behind a proxy when enable NAT and enable/disable host-only.
I really wanna know what I lost,thanks.