The issue has been resolved I had a firewald running on virtual host.

Thank you for the replay.


On 2/13/2022 9:17 PM, Daniel Romero wrote:
Hi,

as Tom says, check iptables forward rules. Also, you can check host sysctl ipv4/6 global and per interface rules to double check bridge forward capabilities. Finally, check your routes on guest vm, especially the default gw, sometimes you can receive the packet and the answer is sent through the wrong interface because of bad routes.

Best Regards.
Daniel Romero P.



On Sun, Feb 13, 2022 at 7:39 PM Tom Ammon <thomasam...@gmail.com <mailto:thomasam...@gmail.com>> wrote:

    Can you post the output of iptables -L?

    By default, the bridge module in the kernel sends packets
    traversing the bridge to iptables (in the FORWARD chain I believe)
    for processing. So if you have configured a DENY policy on the
    FORWARD chain, or are otherwise filtering in the forward chain,
    you'll be affecting packets traversing the bridge. Check out this
    page for details on how to change this behavior:
    https://wiki.libvirt.org/page/Net.bridge.bridge-nf-call_and_sysctl.conf

    Tom

    On Sun, Feb 13, 2022 at 4:08 PM Marcin Groszek
    <mar...@voipplus.net <mailto:mar...@voipplus.net>> wrote:

        I have been struggling with this for weeks and I was unable to
        find an
        answer on line. Perhaps someone here can help me.

        Oracle linux 8 running virtualization:

        hardware node has a public IP address on interface bridge0 and
        physical
        eno1 is a member of the bridge0

        a virtual OS has interface bridged to lan and source is
        bridge0, Ip
        address of virtual OS is also a public from same class as the
        hardware node.

        I can route in and out of virtual, I can ping from hardware
        node to
        virtual and vice versa, so the routing works as it should,
        sort of.

        When I try tracepath or traceroute from outside to virtual I
        get !H on
        last hup

        same result when I try to do the same form hardware node to
        virtual I get !H

        Also, when I telnet (TCP) to a specific port on virtual where
        I have a
        daemon LISTENING OR NOT I get: No route to host. Same
        experiment works
        just fine for ssh port.

        Firewalld is not running, and I just have very basic iptables
        rules like
        allowing external address block to ssh to hardware node and to
        virtual
        dropping connections from all other sources

        This issue presented it self when I attempted to setup a
        galera node on
        virtual and ports 4567 is responding but 4568 and 4444 are
        not, but the
        daemons are running and I can clearly see lsoft showing
        "LISTENING"

        I capture the traffic and the tcp as well as udp are getting
        to the
        virtual. Is there a preconfigured netfiltering that I am not
        aware of?

        What am I missing?




-- Best Regards:
        Marcin Groszek
        Business Voip Resource.
        http://www.voipplus.net



-- -----------------------------------------------------------------------------
    Tom Ammon
    M: (737) 400-9042
    thomasam...@gmail.com <mailto:thomasam...@gmail.com>
    
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--
Best Regards:
Marcin Groszek
Business Voip Resource.
http://www.voipplus.net

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