netdev - Re: [PATCH net-next 00/15] net: Add functional tests for L3 and L4

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Date:   Fri, 2 Aug 2019 09:59:54 -0600
From:   David Ahern <dsahern@...il.com>
To:     Alexei Starovoitov <alexei.starovoitov@...il.com>
Cc:     David Ahern <dsahern@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Network Development <netdev@...r.kernel.org>
Subject: Re: [PATCH net-next 00/15] net: Add functional tests for L3 and L4

On 8/2/19 9:14 AM, Alexei Starovoitov wrote:
> On Thu, Aug 1, 2019 at 9:04 PM David Ahern <dsahern@...il.com> wrote:
>> ...
>>
>>>
>>> with -v I see:
>>> COMMAND: ip netns exec ns-A ping -c1 -w1 -I 172.16.2.1 172.16.1.2
>>> ping: unknown iface 172.16.2.1
>>> TEST: ping out, address bind - ns-B IP                                        [FAIL]
>>
>> With ping from iputils-ping -I can be an address or a device.
> 
> the ping, I have installed, supports -I.
> The issue is somewhere else. Ideas?
> 

make sure ping supports the overloading of -I (both dev and address).

check your kernel version. No results guaranteed on kernel prior to 5.3

This is Fedora 29 with 5.1 kernel

TEST: ping out - ns-B IP                                          [ OK ]
TEST: ping out, device bind - ns-B IP                             [ OK ]
TEST: ping out, address bind - ns-B IP                            [ OK ]
TEST: ping out - ns-B loopback IP                                 [ OK ]
TEST: ping out, device bind - ns-B loopback IP                    [ OK ]
TEST: ping out, address bind - ns-B loopback IP                   [ OK ]
TEST: ping in - ns-A IP                                           [ OK ]
TEST: ping in - ns-A loopback IP                                  [ OK ]
TEST: ping local - ns-A IP                                        [ OK ]
TEST: ping local - ns-A loopback IP                               [ OK ]
TEST: ping local - loopback                                       [ OK ]
TEST: ping local, device bind - ns-A IP                           [ OK ]
TEST: ping local, device bind - ns-A loopback IP                  [ OK ]
TEST: ping local, device bind - loopback                          [ OK ]
TEST: ping out, blocked by rule - ns-B loopback IP                [ OK ]
TEST: ping in, blocked by rule - ns-A loopback IP                 [ OK ]
TEST: ping out, blocked by route - ns-B loopback IP               [ OK ]
TEST: ping in, blocked by route - ns-A loopback IP                [ OK ]
TEST: ping out, unreachable default route - ns-B loopback IP      [ OK ]

Tests are known to work on Debian stretch and buster. Appears to work on
Fedora 29.