net.inet.tcp.pmtud_blackhole_detection

Eugene Grosbein eugen at grosbein.net
Thu Nov 14 07:53:59 UTC 2019


14.11.2019 4:28, Andrea Venturoli wrote:

> Running 11.3, is there any risk or downside in enabling this?
> 
> I cannot reach my homebanking otherwise; I think either the bank has completely disabled ICMP or some router in between filters it.
> 
> I see it's not enabled by default: is it just out of precaution?

I guess it's a misfeature. It should be enabled by default. Feel free to enable it locally.

Note I have not said it should be enabled unconditionally as there may be edge cases (high-load servers)
when extra processing may be undesirable.


More information about the freebsd-net mailing list