[Qemu-devel] [PATCH] Make ping work for -net user

[jbrown105]

This is a very simple proof-of-concept patch that fakes ICMP well enough
for ping to work.

Basically, when the slirp code gets a ping request for an ip outside of
the
slirp network, it runs /bin/ping and reports the results back to the
guest
accordingly.

Right now it uses vfork() and then exec() to run ping on the host, as
for
some reason fork() causes qemu to freeze. I'm still trying to figure out
why.

As a consequence I don't close ping's output or error stream so you see
output
from it on the terminal window that qemu is running on.

Tested on a linux host and a linux guest.
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slirp-ping.patch
Description: Binary data