Routing problems with bridge101 aka host-only in Monterey

Discussion in 'Installation and Configuration of Parallels Desktop' started by BallO, Nov 5, 2022.

  1. BallO

    BallO Hunter

    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 The host OS, Monterey, is at I just want to route traffic through the linux router. The routing table looks fine:
    > netstat -nrf inet
    Routing tables
    Destination        Gateway            Flags           Netif Expire
    default          UGScg       bridge101
    default            link#19            UCSIg       bridge100      !
    default            link#21            UCSIg       bridge101      !            link#21            UHLWIg      bridge101      !          link#21            UHLWIig     bridge101      !
    10.37.129/24       link#21            UC          bridge101      !   UHLWIi            lo0        0.1c.42.87.1e.68   UHLWIir     bridge101   1075      ff.ff.ff.ff.ff.ff  UHLWbI      bridge101      !
    10.211.55/24       link#19            UC          bridge100      !   UHLWIi            lo0      ff.ff.ff.ff.ff.ff  UHLWbI      bridge100      !
    127                UCS               lo0          UH                lo0          UHW3I             lo0   2068
    224.0.0            link#1             UmCS              lo0        link#1             UHmW3I            lo0   3471    1:0:5e:7f:ff:fa    UHmLWIg     bridge100
    This output looks good, too:
    > route get
       route to:
    destination: default
           mask: default
      interface: bridge101
     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?!
  2. BallO

    BallO Hunter

    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.
  3. BallO

    BallO Hunter

    I managed to manually edit
    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
    route get
    now takes a long time, but with the same result.
  4. HaohaoL

    HaohaoL Bit poster

    I have encountered the same issue, Hi @BallO , have you resolved this issue
    I am on Ventura 13.5 with M1
  5. Macn1

    Macn1 Bit poster

    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 :
    # is the IP of vm
     ip r add via
    then ping on host, I can see icmp message via tcpdump .

    but on macOS , not working .

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