From: Michael Richardson <mcr@sandelman.ca>
To: antony.antony@secunet.com
Cc: Steffen Klassert <steffen.klassert@secunet.com>,
Herbert Xu <herbert@gondor.apana.org.au>,
netdev@vger.kernel.org, devel@linux-ipsec.org,
Jakub Kicinski <kuba@kernel.org>,
"David S. Miller" <davem@davemloft.net>
Subject: Re: [devel-ipsec] [PATCH v2 ipsec-next 2/2] xfrm: fix source address in icmp error generation from IPsec gateway
Date: Fri, 27 Oct 2023 09:30:07 -0400 [thread overview]
Message-ID: <16810.1698413407@localhost> (raw)
In-Reply-To: <300c36a0644b63228cee8d0a74be0e1e81d0fe98.1698394516.git.antony.antony@secunet.com>
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Antony Antony via Devel <devel@linux-ipsec.org> wrote:
> When enabling support for xfrm lookup using reverse ICMP payload,
> We have identified an issue where the source address of the IPv4 e.g
> "Destination Host Unreachable" message is incorrect. The IPv6 appear
> to do the right thing.
One thing that operators of routers with a multitude of interfaces want to do
is send all ICMP messages from a specific IP address. Often the public
address, that has the sane reverse DNS name.
AFAIK, this is not an option on Linux, but Cisco/Juniper/etc. devices usually
can do this. I can't recall how today. (I was actually looking that up this week)
This can conflict however, with the need to get the result back into the
tunnel. I don't have a good answer, except that we probably need a fair bit
of flexibility, with some good automatically discovered defaults.
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next prev parent reply other threads:[~2023-10-27 13:39 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <YTXGGiMzsda6mcm2@AntonyAntony.local>
2021-12-19 0:28 ` [RFC PATCH ipsec-next] xfrm: add forwarding ICMP error message Antony Antony
2023-10-26 14:45 ` [PATCH ipsec-next 1/2] xfrm: introduce forwarding of ICMP Error messages Antony Antony
2023-10-26 19:41 ` kernel test robot
2024-01-30 10:36 ` Dan Carpenter
2024-01-31 19:38 ` Antony Antony
2024-01-31 19:48 ` Dan Carpenter
2024-01-31 19:50 ` Dan Carpenter
2023-10-26 14:45 ` [PATCH ipsec-next 2/2] xfrm: fix source address in icmp error generation from IPsec gateway Antony Antony
2023-10-27 8:16 ` [PATCH v2 ipsec-next 1/2] xfrm: introduce forwarding of ICMP Error messages Antony Antony
2023-11-17 9:13 ` Steffen Klassert
2023-11-25 22:48 ` [devel-ipsec] " Antony Antony
2023-10-27 8:16 ` [PATCH v2 ipsec-next 2/2] xfrm: fix source address in icmp error generation from IPsec gateway Antony Antony
2023-10-27 13:30 ` Michael Richardson [this message]
2023-10-29 10:26 ` [devel-ipsec] " Antony Antony
2023-10-31 7:59 ` Michael Richardson
2023-11-17 9:21 ` Steffen Klassert
2023-11-25 23:15 ` [devel-ipsec] " Antony Antony
2023-12-19 20:29 ` [PATCH v3 ipsec-next 1/2] xfrm: introduce forwarding of ICMP Error messages Antony Antony
2023-12-19 20:30 ` [PATCH v3 ipsec-next 2/2] xfrm: fix source address in icmp error generation from IPsec gateway Antony Antony
2023-12-21 13:12 ` [PATCH v4 ipsec-next 1/2] xfrm: introduce forwarding of ICMP Error messages Antony Antony
2023-12-21 13:12 ` [PATCH v4 ipsec-next 2/2] xfrm: fix source address in icmp error generation from IPsec gateway Antony Antony
2023-12-22 7:23 ` Steffen Klassert
2023-12-22 12:56 ` Antony Antony
2023-12-22 12:57 ` [PATCH v5 ipsec-next] xfrm: introduce forwarding of ICMP Error messages Antony Antony
2024-01-04 9:39 ` Steffen Klassert
2024-01-19 11:27 ` [PATCH v6 " Antony Antony
2024-01-26 9:11 ` Steffen Klassert
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