DNS resolves but there is a delay in ping response

[pacmac]

Hello,

I have a ESXi machine. I have pfSense in an VM, Debian with PiHole in another VM connected to the pfSense LAN interface.

if I do a ping www.google.com, it resolves instantly, but there is a delay to the first ping response.
if I do a ping from pfSense, it resolves and start receiving responses instantly.

pfSense is using that Debian/PiHole VM for DNS requests.

any idea?

BR.

[pacmac]

I have a big delay also accessing to outlook.office.com

While looking to the browser logs I see that there are a lot of net::ERR_CONNECTION_RESET 200 errors.

[johnpoz]

And why would you think pfsense has anything to do with that? Are you running proxy on pfsense?

[pacmac]

Because when I back to my router as gateway, then connection is perfect.

[johnpoz]

Are you running proxy on pfsense?

[pacmac]

@johnpoz no.

I have created (on ESXi):

• one vswitch for WAN
  pfsense address 192.168.0.2
  gateway address 192.168.0.1 (my livebox)
• one vswitch for LAN
  pfsense as gateway on 10.0.0.1
  pihole on 10.0.0.3

I have a desktop on the livebox subnet: 192.168.0.0/24 with this configuration
IP address 192.168.0.103
Gateway 192.168.0.2 (pfSense)
DNS 8.8.8.8

and I still have the same problem, delays between name resolution and response on pings and big delay on most web accesses.

let me know if you want screenshots from anything.

[johnpoz]

None of that has anything to do with what I asked.. Are you running proxy on pfsense?

Resolving and RTT of pings have zero to do with each other.

[pacmac]

@johnpoz

I answered 'no' to that on my previous comment in the first line.

I don't have too much idea about networking, sorry. I am just giving you as much information as I can.