linux-kernel - Re: PROBLEM: Can ping address, but traceroute gets ENETDOWN

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20120717155539.1a6dbfc4@tux.DEF.witbe.net>
Date:	Tue, 17 Jul 2012 15:55:39 +0200
From:	Paul Rolland (ポール・ロラン) 
	<rol@...be.net>
To:	Terry Phelps <tgphelps50@...il.com>
Cc:	Eric Dumazet <eric.dumazet@...il.com>,
	linux-kernel@...r.kernel.org, rol@...be.net
Subject: Re: PROBLEM: Can ping address, but traceroute gets ENETDOWN

Hello,

On Tue, 17 Jul 2012 09:41:27 -0400
Terry Phelps <tgphelps50@...il.com> wrote:

> On Tue, Jul 17, 2012 at 9:30 AM, Eric Dumazet <eric.dumazet@...il.com>
> wrote:
> > On Tue, 2012-07-17 at 09:04 -0400, Terry Phelps wrote:
> >> socket(PF_INET, SOCK_DGRAM, IPPROTO_IP) = 3
> >> setsockopt(3, SOL_IP, IP_MTU_DISCOVER, [0], 4) = 0
> >> setsockopt(3, SOL_SOCKET, SO_TIMESTAMP, [1], 4) = 0
> >> fcntl(3, F_SETFL, O_RDONLY|O_NONBLOCK)  = 0
> >> setsockopt(3, SOL_IP, IP_TTL, [1], 4)   = 0
> >> setsockopt(3, SOL_IP, IP_RECVERR, [1], 4) = 0
> >> connect(3, {sa_family=AF_INET, sin_port=htons(33434),
> >> sin_addr=inet_addr("192.168.118.22")}, 28) = 0
> >> sendto(3, "@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_"..., 40, 0, NULL, 0) = -1
> >> ENETDOWN (Network is down)

ENETDOWN should mean your interface is no more in the UP status.

Could it be you have some processes running that could turn down and up
your interfaces ? Anything in /var/log/messages about eth0 ?

Paul



Download attachment "signature.asc" of type "application/pgp-signature" (199 bytes)