On Mon, Feb 10, 2020 at 05:15:00PM +0000, Peter M??ller wrote:
> Hello Lucas,
>
> as far as I understood, setting MTU on encN interfaces is not supported
> since it is not mentioned by enc(4) and setting it manually fails:
>
> > machine# ifconfig enc0 mtu 1500
> > ifconfig: SIOCSIFMTU: Inappropriate ioctl for device
>
> If you do not want to use GRE tunnels or gif interfaces, I suppose truncating
> MSS via pf might be an acceptable but not elegant solution:
I have max-mss and reassemble tcp:
match in on gre0 scrub (max-mss 1456, reassemble tcp)
However still experienced about 5% packet loss when i run speedtest.net through
the tunnel.
In my instance, the solution for eliminating packet loss over the long distance
ipsec/gre tunnel was putting in a queue:
queue hfsq-gre0 on gre0 flows 1024 bandwidth $BW_LIMIT max $BW_LIMIT quantum 400 qlimit 1000 default
.d.d.
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