Date: Thu, 11 Jul 2024 17:06:18 +0300 From: Odhiambo Washington <odhiambo@gmail.com> To: FreeBSD virtualization <freebsd-virtualization@freebsd.org> Subject: Suddenly unable to access VMs Message-ID: <CAAdA2WMaO8PPnFErZa0gcN-VPD6My4RtJB3u27BYi=8CWMZK=A@mail.gmail.com>
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[-- Attachment #1 --]
My bhyve VMs have been all fine until now.
I can't ping them and can't SSH into them. However, I can connect to them
with VNCViewer from a remote host (my PC from my house) :-(
I haven't done any changes on the host at all.
dnsmasq is running, but seems like the VMs aren't getting the IPs for some
reason.
```
cloned_interfaces="bridge0 tap0 tap1 tap2 tap3 tap4 tap5"
ifconfig_bridge0_name="vmbridge"
ifconfig_vmbridge="addm em1 addm tap0 addm tap1 addm tap2 addm tap3 addm
tap4 addm tap5 up"
ifconfig_vmbridge_alias0="inet 172.16.0.1 netmask 255.255.255.0"
```
What might have happened?
root@gw:/home/wash # ifconfig vmbridge
vmbridge: flags=1008843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST,LOWER_UP>
metric 0 mtu 1500
options=0
ether 58:9c:fc:10:df:1d
inet 172.16.0.1 netmask 0xffffff00 broadcast 172.16.0.255
id 00:00:00:00:00:00 priority 32768 hellotime 2 fwddelay 15
maxage 20 holdcnt 6 proto rstp maxaddr 2000 timeout 1200
root id 00:00:00:00:00:00 priority 32768 ifcost 0 port 0
member: tap5 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
ifmaxaddr 0 port 10 priority 128 path cost 2000000
member: tap4 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
ifmaxaddr 0 port 9 priority 128 path cost 2000000
member: tap3 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
ifmaxaddr 0 port 8 priority 128 path cost 2000000
member: tap2 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
ifmaxaddr 0 port 7 priority 128 path cost 2000000
member: tap1 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
ifmaxaddr 0 port 6 priority 128 path cost 2000000
member: tap0 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
ifmaxaddr 0 port 5 priority 128 path cost 2000000
member: em1 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
ifmaxaddr 0 port 2 priority 128 path cost 55
groups: bridge
nd6 options=9<PERFORMNUD,IFDISABLED>
root@gw:/home/wash # ssh 172.16.0.99
ssh: connect to host 172.16.0.99 port 22: Permission denied
root@gw:/home/wash # ssh 172.16.0.100
ssh: connect to host 172.16.0.100 port 22: Permission denied
root@gw:/home/wash # ping 172.16.0.100
PING 172.16.0.100 (172.16.0.100): 56 data bytes
ping: sendto: Permission denied
ping: sendto: Permission denied
ping: sendto: Permission denied
ping: sendto: Permission denied
^C
--- 172.16.0.100 ping statistics ---
4 packets transmitted, 0 packets received, 100.0% packet loss
root@gw:/home/wash # ping 172.16.0.99
PING 172.16.0.99 (172.16.0.99): 56 data bytes
ping: sendto: Permission denied
ping: sendto: Permission denied
ping: sendto: Permission denied
^C
--- 172.16.0.99 ping statistics ---
3 packets transmitted, 0 packets received, 100.0% packet loss
root@gw:/home/wash # service dnsmasq status
dnsmasq is running as pid 4190.
root@gw:/home/wash #
--
Best regards,
Odhiambo WASHINGTON,
Nairobi,KE
+254 7 3200 0004/+254 7 2274 3223
In an Internet failure case, the #1 suspect is a constant: DNS.
"Oh, the cruft.", egrep -v '^$|^.*#' ¯\_(ツ)_/¯ :-)
[How to ask smart questions:
http://www.catb.org/~esr/faqs/smart-questions.html]
[-- Attachment #2 --]
<div dir="ltr">My bhyve VMs have been all fine until now.<div>I can't ping them and can't SSH into them. However, I can connect to them with VNCViewer from a remote host (my PC from my house) :-(</div><div><br></div><div>I haven't done any changes on the host at all.</div><div>dnsmasq is running, but seems like the VMs aren't getting the IPs for some reason.</div><div><br></div><div>```</div><div>cloned_interfaces="bridge0 tap0 tap1 tap2 tap3 tap4 tap5"<br>ifconfig_bridge0_name="vmbridge"<br>ifconfig_vmbridge="addm em1 addm tap0 addm tap1 addm tap2 addm tap3 addm tap4 addm tap5 up"<br>ifconfig_vmbridge_alias0="inet 172.16.0.1 netmask 255.255.255.0"</div><div>```<br><div>What might have happened?</div><div><br></div><div><br></div><div>root@gw:/home/wash # ifconfig vmbridge<br>vmbridge: flags=1008843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST,LOWER_UP> metric 0 mtu 1500<br> options=0<br> ether 58:9c:fc:10:df:1d<br> inet 172.16.0.1 netmask 0xffffff00 broadcast 172.16.0.255<br> id 00:00:00:00:00:00 priority 32768 hellotime 2 fwddelay 15<br> maxage 20 holdcnt 6 proto rstp maxaddr 2000 timeout 1200<br> root id 00:00:00:00:00:00 priority 32768 ifcost 0 port 0<br> member: tap5 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP><br> ifmaxaddr 0 port 10 priority 128 path cost 2000000<br> member: tap4 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP><br> ifmaxaddr 0 port 9 priority 128 path cost 2000000<br> member: tap3 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP><br> ifmaxaddr 0 port 8 priority 128 path cost 2000000<br> member: tap2 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP><br> ifmaxaddr 0 port 7 priority 128 path cost 2000000<br> member: tap1 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP><br> ifmaxaddr 0 port 6 priority 128 path cost 2000000<br> member: tap0 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP><br> ifmaxaddr 0 port 5 priority 128 path cost 2000000<br> member: em1 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP><br> ifmaxaddr 0 port 2 priority 128 path cost 55<br> groups: bridge<br> nd6 options=9<PERFORMNUD,IFDISABLED><br>root@gw:/home/wash # ssh 172.16.0.99<br>ssh: connect to host 172.16.0.99 port 22: Permission denied<br>root@gw:/home/wash # ssh 172.16.0.100<br>ssh: connect to host 172.16.0.100 port 22: Permission denied<br>root@gw:/home/wash # ping 172.16.0.100<br>PING 172.16.0.100 (172.16.0.100): 56 data bytes<br>ping: sendto: Permission denied<br>ping: sendto: Permission denied<br>ping: sendto: Permission denied<br>ping: sendto: Permission denied<br>^C<br>--- 172.16.0.100 ping statistics ---<br>4 packets transmitted, 0 packets received, 100.0% packet loss<br>root@gw:/home/wash # ping 172.16.0.99<br>PING 172.16.0.99 (172.16.0.99): 56 data bytes<br>ping: sendto: Permission denied<br>ping: sendto: Permission denied<br>ping: sendto: Permission denied<br>^C<br>--- 172.16.0.99 ping statistics ---<br>3 packets transmitted, 0 packets received, 100.0% packet loss<br>root@gw:/home/wash # service dnsmasq status<br>dnsmasq is running as pid 4190.<br>root@gw:/home/wash #<br></div><div><br></div><div><br clear="all"><div><br></div><span class="gmail_signature_prefix">-- </span><br><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div dir="ltr"><div>Best regards,<br>Odhiambo WASHINGTON,<br>Nairobi,KE<br>+254 7 3200 0004/+254 7 2274 3223</div><div><span style="color:rgb(34,34,34)"> In </span><span style="color:rgb(34,34,34)">an Internet failure case, the #1 suspect is a constant: DNS.</span><br>"<span style="font-size:12.8px">Oh, the cruft.</span><span style="font-size:12.8px">", </span><span style="font-size:12.8px">egrep -v '^$|^.*#' </span><span style="background-color:rgb(34,34,34);color:rgb(238,238,238);font-family:"Lucida Console",Consolas,"Courier New",monospace;font-size:13.6px">¯\_(ツ)_/¯</span><span style="font-size:12.8px"> :-)</span></div><div><span style="font-size:12.8px">[How to ask smart questions: </span><span style="font-size:12.8px"><a href="http://www.catb.org/~esr/faqs/smart-questions.html" target="_blank">http://www.catb.org/~esr/faqs/smart-questions.html</a>]</span></div></div></div></div></div></div></div>;
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