fix: get network card interface in Android 11 environment

[wlynxg]

For #40569

Fix: In response to the modifications made to the permissions for accessing system MAC addresses in Android 11, ordinary applications encounter several main issues when using NETLINK sockets:

• Not allowing bind operations on NETLINK sockets.
• Not permitting the use of the RTM_GETLINK functionality.

For detailed information, please refer to: https://developer.android.com/training/articles/user-data-ids#mac-11-plus

As a result of the aforementioned reasons, using net.Interfaces() and net.InterfaceAddrs() from the Go net package in the Android environment leads to the route ip+net: netlinkrib: permission denied error.

You can find specific issue details here: #40569

To address the issue of using the Go net package in the Android environment, we have made partial modifications to its source code to ensure proper functionality on Android.

I have fully resolved the issues with net.InterfaceAddrs().

However, for net.Interfaces(), we have only addressed some problems, as the following issues still remain:

• It can only return interfaces with IP addresses.
• It cannot return hardware MAC addresses.

Nevertheless, the fixed net.Interfaces() function now aligns with the Android API's NetworkInterface.getNetworkInterfaces() and can be used normally in most scenarios.

The specific fix logic includes:

Removing the Bind() operation on Netlink sockets in the NetlinkRIB() function.
Using ioctl based on the Index number returned by RTM_GETADDR to retrieve the network card's name, MTU, and flags.

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[hopwesley]

package gobind/gobind
imports fmt
imports os
imports internal/poll
imports internal/syscall/unix
imports syscall
imports os: import cycle not allowed
package gobind/gobind
imports fmt
imports os
imports internal/poll
imports internal/syscall/unix
imports syscall
imports os: import cycle not allowed
package gobind/gobind
imports fmt
imports os
imports internal/poll
imports internal/syscall/unix
imports syscall
imports os: import cycle not allowed
package gobind/gobind
imports fmt
imports os
imports internal/poll
imports internal/syscall/unix
imports syscall
imports os: import cycle not allowed

[wlynxg]

package gobind/gobind imports fmt imports os imports internal/poll imports internal/syscall/unix imports syscall imports os: import cycle not allowed package gobind/gobind imports fmt imports os imports internal/poll imports internal/syscall/unix imports syscall imports os: import cycle not allowed package gobind/gobind imports fmt imports os imports internal/poll imports internal/syscall/unix imports syscall imports os: import cycle not allowed package gobind/gobind imports fmt imports os imports internal/poll imports internal/syscall/unix imports syscall imports os: import cycle not allowed

This pull was a mistake on my part, the correct one is this: #61089