Routing problems with bridge101 aka host-only in Monterey

I've been trying to get a simple route working in Parallel Desktop for days with zero success. I had a similar setup working in Mohave using an older version.
Setup: I have a linux router running on the host-only virtual network at 10.37.129.3. The host OS, Monterey, is at 10.37.129.2. I just want to route traffic through the linux router. The routing table looks fine:

Code:

> netstat -nrf inet
Routing tables

Internet:
Destination        Gateway            Flags           Netif Expire
default            10.37.129.3        UGScg       bridge101
default            link#19            UCSIg       bridge100      !
default            link#21            UCSIg       bridge101      !
8.8.8.8            link#21            UHLWIg      bridge101      !
10.0.0.12          link#21            UHLWIig     bridge101      !
10.37.129/24       link#21            UC          bridge101      !
10.37.129.2        b2.be.83.d5.0.65   UHLWIi            lo0
10.37.129.3        0.1c.42.87.1e.68   UHLWIir     bridge101   1075
10.37.129.255      ff.ff.ff.ff.ff.ff  UHLWbI      bridge101      !
10.211.55/24       link#19            UC          bridge100      !
10.211.55.2        b2.be.83.d5.0.64   UHLWIi            lo0
10.211.55.255      ff.ff.ff.ff.ff.ff  UHLWbI      bridge100      !
127                127.0.0.1          UCS               lo0
127.0.0.1          127.0.0.1          UH                lo0
127.0.0.2          127.0.0.1          UHW3I             lo0   2068
224.0.0            link#1             UmCS              lo0
224.0.0.251        link#1             UHmW3I            lo0   3471
239.255.255.250    1:0:5e:7f:ff:fa    UHmLWIg     bridge100

This output looks good, too:

Code:

> route get 8.8.8.8
   route to: 8.8.8.8
destination: default
       mask: default
  interface: bridge101
      flags: <UP,DONE,CLONING,STATIC,IFSCOPE,GLOBAL>
 recvpipe  sendpipe  ssthresh  rtt,msec    rttvar  hopcount      mtu     expire
       0         0         0         0         0         0      1500     -1408

Running tcpdump on the router I can see when Monterey pings the router, but there is no traffic if I set it as the default gateway.
I can also use the linux router as the Windows 11 default gateway just fine, so the router doesn't appear to be the problem.
Anyone have any suggestions?!

 

I attempted to add the entry in /Library/Preferences/SystemConfiguration/preferences.plist to make the Network Service show up like it used to in Mohave to no avail.

 

I managed to manually edit

Code:

/Library/Preferences/SystemConfiguration/preferences.plist

and for the Network Service to show, but the old method to use the virtual gateway which worked in Mojave isn't working in Monterey. The routing table is now automatically set and looks correct (same as I manually set it before), but still can't route and tcpdump on the router shows no attempt. The only curious change is

Code:

route get 8.8.8.8

now takes a long time, but with the same result.

 

I have encountered the same issue, Hi @BallO , have you resolved this issue
I am on Ventura 13.5 with M1

 

I'm also trying to figure out how to route traffic from host(macOS sonoma) to vm , but fail.
On linux , I install a virtualbox vm , and setup a route :

Code:

# 192.168.56.2 is the IP of vm
 ip r add 10.21.1.0/24 via 192.168.56.2

then ping 10.21.1.9 on host, I can see icmp message via tcpdump .

but on macOS , not working .