From: Alessandro Vesely <vesely@tana.it>
To: netfilter@vger.kernel.org
Subject: Extending an IPv4 filter to IPv6
Subject: Extending an IPv4 filter to IPv6
Date: Fri, 18 Aug 2023 12:56:38 +0200 [thread overview]
Message-ID: <9d98b203-b22a-898c-1a4f-c83e706bc411@tana.it> (raw)
Hi all,
I have an old program (ipqbdb) which filters IPv4 packets using
libnetfilter_queue. I want to extend it to also filter IPv6, now that at last
I can use some of those addresses.
The program obtains a handle by nfq_open(), and then (after unbind) binds by
nfq_bind_pf(h, AF_INET). Afterwards it creates the configured number of queues
and filters the packets it finds there.
There is a big DEPRECATED in the documentation, and the generated doc for
nfq_bind_pf() parameters says "This call is obsolete, Linux kernels from 3.8
onwards ignore it" (which is obviously false).
https://netfilter.org/projects/libnetfilter_queue/doxygen/
So, the first question: Can I keep using these functions? What is the alternative?
Second question: Is there a "mixed mode" parameter, besides PF_INET and
PF_INET6, that allows to capture both types? In that case, can a queue receive
either packet?
Any other suggestion about extending to IPv6 is probably going to be appreciated.
Thank you
Ale
--
next reply other threads:[~2023-08-18 10:56 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-08-18 10:56 Alessandro Vesely [this message]
2023-08-19 1:46 ` Extending an IPv4 filter to IPv6 Duncan Roe
2023-08-19 9:53 ` Extending an IPv4 filter to IPv6, " Alessandro Vesely
2023-08-20 1:09 ` Duncan Roe
2023-08-20 21:39 ` Pablo Neira Ayuso
2023-08-20 21:41 ` Pablo Neira Ayuso
2023-08-21 17:18 ` Extending an IPv4 filter to IPv6, " Alessandro Vesely
2023-08-21 19:10 ` Pablo Neira Ayuso
2023-08-22 18:09 ` Extending an IPv4 filter to IPv6, " Alessandro Vesely
2023-08-27 8:34 ` Duncan Roe
2023-08-27 17:20 ` Extending an IPv4 filter to IPv6, " Alessandro Vesely
2023-08-27 18:58 ` Duncan Roe
2023-08-27 21:12 ` Pablo Neira Ayuso
2023-08-27 20:49 ` Pablo Neira Ayuso
2023-08-27 20:48 ` Pablo Neira Ayuso
2023-08-31 9:22 ` Extending an IPv4 filter to IPv6, " Alessandro Vesely
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