maxmbed commented on issue #11223:
URL: https://github.com/apache/nuttx/issues/11223#issuecomment-1826281959
Thanks @anjiahao1, launching gdb with the admin privilege is working. I can
access network now.
Without sudo, the issue happens during the configuration of the tap device
in `nuttx/arch/sim/src/sim/posix/sim_tapdev.c`
A error message is logged to host syslog but it is not prompted in the Nuttx
shell.
```c
207 /* Configure the tap device */
208
209 memset(&ifr, 0, sizeof(ifr));
210 ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
211 ret = ioctl(tapdevfd, TUNSETIFF, (unsigned long) &ifr);
212 if (ret < 0)
213 {
214 syslog(LOG_ERR, "TAPDEV: ioctl failed: %d\n", -ret);
215 close(tapdevfd);
216 return;
217 }
```
Though, I don't like the idea to give admin privilege to GDB because there
is good reason to use theLinux capabilities but that does not seems to work
when I try `sudo setcap cap_net_admin+ep /usr/bin/gdb` or `setcap
cap_net_raw,cap_net_admin=eip /usr/bin/gdb`.
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