From: Matthias Urlichs <matthias@urlichs.de>
To: wireguard@lists.zx2c4.com
Subject: Re: bad udp cksum messages in tcpdump for wg0
Date: Fri, 27 Dec 2019 15:45:04 +0100 [thread overview]
Message-ID: <b9511f60-672c-2b5b-d6aa-893dfd87954b@urlichs.de> (raw)
In-Reply-To: <49-5dfcd100-9-66d44b80@213097787>
Hi,
> ethtool -K wg0 tx off rx off
>
> I want to know if the behavior described above with the checksum
> errors is to be expected? Or is it necessary to turn those checks off
> on all the interfaces?
Yeah. I need that too, on one of my routers. Apparently some checksum
offloading hardware gets confused by wireguard.
Interestingly, on that machine fixing this problem requires turning off
checksumming on the wg interface _or_ on the hardware interface, either
way is sufficient.
--
-- Matthias Urlichs
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prev parent reply other threads:[~2019-12-27 14:45 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-20 13:47 google gsuite
2019-12-27 14:45 ` Matthias Urlichs [this message]
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