<div dir="auto">What does ip neigh show?</div><div class="gmail_extra"><br><div class="gmail_quote">On Jul 1, 2017 11:40, "Raj Wurttemberg" <<a href="mailto:rajaw@c64.us">rajaw@c64.us</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">net.ipv4.icmp_echo_ignore_all = 1 in sysctl.conf maybe?<br>
<br>
/Raj<br>
<br>
-----Original Message-----<br>
From: <a href="mailto:ale-bounces@ale.org">ale-bounces@ale.org</a> [mailto:<a href="mailto:ale-bounces@ale.org">ale-bounces@ale.org</a>] On Behalf Of<br>
DJ-Pfulio<br>
Sent: Saturday, July 1, 2017 11:17 AM<br>
To: 'Atlanta Linux Enthusiasts' <<a href="mailto:ale@ale.org">ale@ale.org</a>><br>
Subject: Re: [ale] Can't ping localhost<br>
<br>
<br>
<br>
Nope. I dumped all the FW rules and grep'd for '127.0' - nothing.<br>
Also, nothing in any system logs, FW logs or dmesg.<br>
<br>
I do see lots of multi-cast broadcasts being blocked - 224.0.0.1.<br>
<br>
SMTP is listening on port 25/tcp.<br>
$ netstat -an | grep 127.0.0.1<br>
tcp 0 0 <a href="http://127.0.0.1:25" rel="noreferrer" target="_blank">127.0.0.1:25</a> 0.0.0.0:* LISTEN<br>
udp 0 0 <a href="http://127.0.0.1:123" rel="noreferrer" target="_blank">127.0.0.1:123</a> 0.0.0.0:*<br>
<br>
This is expected.<br>
<br>
<br>
More ideas?<br>
<br>
On 07/01/2017 11:01 AM, Raj Wurttemberg wrote:<br>
> Local firewall blocking icmp traffic? I ask because some data is<br>
> traversing<br>
> lo:<br>
><br>
> RX packets:** 41 ** errors:0 dropped:0 overruns:0 frame:0<br>
> TX packets:** 41 ** errors:0 dropped:0 overruns:0 carrier:0<br>
><br>
> /Raj<br>
><br>
> -----Original Message-----<br>
> From: <a href="mailto:ale-bounces@ale.org">ale-bounces@ale.org</a> [mailto:<a href="mailto:ale-bounces@ale.org">ale-bounces@ale.org</a>] On Behalf Of<br>
> DJ-Pfulio<br>
> Sent: Saturday, July 1, 2017 10:24 AM<br>
> To: Atlanta Linux Enthusiasts <<a href="mailto:ale@ale.org">ale@ale.org</a>><br>
> Subject: [ale] Can't ping localhost<br>
><br>
> $ ping localhost<br>
> PING localhost (127.0.0.1) 56(84) bytes of data.<br>
> ^C<br>
> --- localhost ping statistics ---<br>
> 6 packets transmitted, 0 received, 100% packet loss, time 5040ms<br>
><br>
> Huh? 6 dropped packets.<br>
><br>
> $ ifconfig lo<br>
> lo Link encap:Local Loopback<br>
> inet addr:127.0.0.1 Mask:255.0.0.0<br>
> inet6 addr: ::1/128 Scope:Host<br>
> UP LOOPBACK RUNNING MTU:65536 Metric:1<br>
> RX packets:41 errors:0 dropped:0 overruns:0 frame:0<br>
> TX packets:41 errors:0 dropped:0 overruns:0 carrier:0<br>
> collisions:0 txqueuelen:1<br>
> RX bytes:3444 (3.4 KB) TX bytes:3444 (3.4 KB)<br>
><br>
<br>
<br>
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</blockquote></div></div>