From: Pablo Neira Ayuso <pablo@netfilter.org>
To: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
Cc: Florian Westphal <fw@strlen.de>,
netfilter-devel@vger.kernel.org, steffen.klassert@secunet.com
Subject: Re: [PATCH nf-next] netfilter: nf_defrag_ipv4: Add sysctl to disable per interface
Date: Wed, 8 Nov 2017 05:34:51 +0100 [thread overview]
Message-ID: <20171108043451.GC1530@salvia> (raw)
In-Reply-To: <8c74f85d5f668516766ed208cb8eb415@codeaurora.org>
On Tue, Nov 07, 2017 at 11:58:40AM -0700, Subash Abhinov Kasiviswanathan wrote:
> >This breaks connection tracking for packets coming in via such
> >interfaces.
> >
> >Nowadays we only enable defrag in a network namespace if the ip/nftables
> >ruleset requires it, so this setting would be counter-productive.
[...]
> This usecase is run on an Android based device, so there will be only
> the init namespace. While the specific rmnet interfaces for wifi calling do
> not require conntrack / iptables, some other scenarios like NAT on other
> interfaces may trigger the load of the defrag module. Hence, we needed
> this interface specific way of preventing defrag.
We can probably skip defrag if explicit notrack is requested via rule.
next prev parent reply other threads:[~2017-11-08 4:35 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-04 2:28 [PATCH nf-next] netfilter: nf_defrag_ipv4: Add sysctl to disable per interface Subash Abhinov Kasiviswanathan
2017-11-04 9:07 ` Steffen Klassert
2017-11-07 10:30 ` Florian Westphal
2017-11-07 18:58 ` Subash Abhinov Kasiviswanathan
2017-11-08 4:34 ` Pablo Neira Ayuso [this message]
2017-11-08 20:46 ` Subash Abhinov Kasiviswanathan
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