From: Pablo Neira Ayuso <pablo@netfilter.org>
To: Meyer Raffaele <raffaele.meyer@fhnw.ch>
Cc: "netfilter-devel@vger.kernel.org" <netfilter-devel@vger.kernel.org>
Subject: Re: Possible segfault in nft utility
Date: Fri, 8 Apr 2016 13:51:44 +0200 [thread overview]
Message-ID: <20160408115144.GA7003@salvia> (raw)
In-Reply-To: <60982738E3650D41B91037A907B50C6A31797345@MXAMU25.adm.ds.fhnw.ch>
On Fri, Apr 08, 2016 at 11:10:47AM +0000, Meyer Raffaele wrote:
> Dear Sir or Madam
>
> I am currently using nftables under Ubuntu 15.10. Kernel version is 4.2.0-16-generic and nftables version is nftables v0.4 (Support Edward Snowden).
> I was looking for a way to match packets based on the mss optional value in the tcp header. While using the describe command, I encountered a segfault:
>
> user@machine:~$ nft describe tcp reserved
> Segmentation fault (core dumped)
This is already fixed in 0.5 as weel as in the upcoming 0.6 release.
# nft describe tcp reserved
payload expression, datatype integer (integer), 4 bits
> It is not really a bad bug since the reserved keyword is probably
> not used anyway but I thought to report it. At the same time I
> wanted to ask if it is possible to match packets on wether they have
> a MaximumSegmentSize set in the TCP header or not.
Several people already asked for TCP options matching already, this is
coming soon.
prev parent reply other threads:[~2016-04-08 11:51 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-08 11:10 Possible segfault in nft utility Meyer Raffaele
2016-04-08 11:51 ` Pablo Neira Ayuso [this message]
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