Re: [Xen-users] I can't access to my VM via network!!

[Simon Hobson <linux@xxxxxxxxxxxxxxxx>]

Please don't top post, it's intensely annoying to some of us.


Jason Long <hack3rcon@xxxxxxxxx> wrote:

> vif=['mac=00:16:17:a5:6y:89,bridge=br0']

OK, you still have a "y" in the MAC address there. That may or may not affect 
things - I actually have no idea on that but Id suggest correcting it.

> 4: enp7s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel master 
> br0 state UP group default qlen 1000

> 8: br0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP 
> group default 
>     inet 172.30.9.20/24 brd 172.30.9.255 scope global br0
>        valid_lft forever preferred_lft forever

OK, that looks OK.


> 21: vif7.0-emu: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel 
> master br0 state UNKNOWN group default qlen 500

TBH, I have no idea what this is or where it came from.

> 22: vif7.0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq master br0 
> state DOWN group default qlen 32

Ah, that doesn't look right. The state is UP on my systems.
Correction, on one host all the interfaces show as UP, on another they all show 
as UNKNOWN.

> bridge name   bridge id               STP enabled     interfaces
> br0           8000.50e54940c48f       no              enp7s0
>                                                       vif7.0
>                                                       vif7.0-emu

That looks OK - apart from that vif7.0-emu I've not seen before.

So I think the next step is to look at the guest. It should have one network 
interface, state up, with an IP address configured.

"ip neigh" on both host and guest might give some clues, and "brctl showmacs 
br0" on the host should show if it's seeing anything from the guest.

But I will have to admit, this is somewhat out of my skills zone now ...


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