Machine on local lan are using relays

hello, thanks much

all machines are using v1.16.2.

  1. en08 - my windows 11 laptop
  2. wsl01 - wsl/linux virtual machine running on en08
  3. vserver03 - windows server on same local lan as en08.

on en08, seems to access wsl01 and vserver03, a relay is required
if correct, why would that happen?

from en08

tailscale netcheck
2021/11/08 16:09:33 portmap: Got PMP response; IP: 173.70.42.xxx, epoch: 5214613
2021/11/08 16:09:33 portmap: Got PCP response: epoch: 5214613

Report:
        * UDP: true
        * IPv4: yes, 173.70.42.xxx:54900
        * IPv6: no
        * MappingVariesByDestIP: true
        * HairPinning: false
        * PortMapping: NAT-PMP, PCP
        * Nearest DERP: New York City
        * DERP latency:
                - nyc: 7.4ms   (New York City)
                - ord: 20.8ms  (Chicago)
                - dfw: 37.3ms  (Dallas)
                - sfo: 53.6ms  (San Francisco)
                - sea: 72.3ms  (Seattle)
                - lhr: 85.9ms  (London)
                - fra: 89ms    (Frankfurt)
                - sao: 118.6ms (São Paulo)
                - tok: 149.6ms (Tokyo)
                - blr: 214.4ms (Bangalore)
                - syd: 229.4ms (Sydney)
                - sin: 236ms   (Singapore)

tailscale status
100.105.25.46   en08                 asdffdsazqqq@ windows -
100.87.56.22    vserver03            asdffdsazqqq@ windows active; relay "nyc", tx 13468 rx 0
100.89.99.52    wsl01                asdffdsazqqq@ linux   active; relay "nyc", tx 308684 rx 182728

from vserver03

tailscale status
# Health check:
#     - haven't heard from home DERP region 1 in 30m32s

100.87.56.22    vserver03            asdffdsazqqq@ windows -
100.105.25.46   en08                 asdffdsazqqq@ windows -

tailscale netcheck
2021/11/08 16:32:40 portmap: Got PMP response; IP: 173.70.42.xxx, epoch: 5216000
2021/11/08 16:32:40 portmap: Got PCP response: epoch: 5216000

Report:
        * UDP: true
        * IPv4: yes, 173.70.42.xxx:1206
        * IPv6: no
        * MappingVariesByDestIP: true
        * HairPinning: false
        * PortMapping: NAT-PMP, PCP
        * Nearest DERP: New York City
        * DERP latency:
                - nyc: 6.2ms   (New York City)
                - ord: 18.4ms  (Chicago)
                - dfw: 35.6ms  (Dallas)
                - sea: 59.8ms  (Seattle)
                - sfo: 63.6ms  (San Francisco)
                - fra: 87.1ms  (Frankfurt)
                - lhr: 87.2ms  (London)
                - sao: 145ms   (São Paulo)
                - tok: 159.5ms (Tokyo)
                - blr: 210.8ms (Bangalore)
                - syd: 214.9ms (Sydney)
                - sin: 227.1ms (Singapore)

If you can send the Tailscale IP addresses of the nodes involved to support@tailscale.com, we can look into why that might be.