On Tue, Jul 09, 2024 at 05:29:59PM -0400, Willem de Bruijn wrote: > > This is an unfortunate feature, but already exists. > > It decreases gso_size to account for tunnel headers. Growing the tunnel header is totally fine. But you should not decrease gso_size because of that. Instead the correct course of action is to drop the packet and generate an ICMP if it no longer fits the MTU. A router that resegments a TCP packet at the TCP-level (not IP) is brain-dead. Cheers, -- Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
