[Bug 8332] Multiple applications fail to send ICMP requests on Linux (failure to open IPPROTO_ICMP sockets)

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=8332

Zebediah Figura <z.figura12(a)gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |z.figura12(a)gmail.com
            Summary|Applications and games      |Multiple applications fail
                   |using ICMP ping request     |to send ICMP requests on
                   |report 'no connection to    |Linux (failure to open
                   |internet' (Wine             |IPPROTO_ICMP sockets)
                   |32-bit/64-bit preloader     |
                   |requires CAP_NET_RAW to     |
                   |create raw sockets)         |
                URL|https://web.archive.org/web |
                   |/20070202125803/http://baha |
                   |i-education.org/ocean/Ocean |
                   |_English.exe                |
           Keywords|download                    |

--- Comment #37 from Zebediah Figura <z.figura12(a)gmail.com> ---
I'm adjusting the title, since it's misleading. As far as I understand
SOCK_DGRAM + IPPROTO_ICMP actually does sufficiently work on Linux (Damjan
claims it is "completely broken", which seems odd seeing as `wine ping` works
fine.) The problem is, as far as I'm aware, this is *also* forbidden by default
on some distributions, including Debian, via the "net.ipv4.ping_group_range"
sysctl.

Should we just require that sysctl to be set for Wine? Is it reasonable to try
to fall back to ping(1)? I don't see any other way to achieve what we want...

The linked download no longer works on Windows (i.e. it gives the same "no
internet detected" message; probably the service died), so I'm removing that.

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