When network to domU is connected via bridge config, having an open ssh connection to dom0 and domU at the same time randomly drops dom0 connection (Connection reset by peer) and doesn't allow me back in.
Authorization is done via ssh keys. Any tips on solving that one?
EDIT: some more details about the environment
dom0
# cat /proc/version Linux version 2.6.18-128.1.10.el5xen ([email protected]) (gcc version 4.1.2 20080704 (Red Hat 4.1.2-44)) #1 SMP Thu May 7 11:07:18 EDT 2009
domU
# cat /proc/version Linux version 2.6.9-78.0.22.ELxenU ([email protected]) (gcc version 3.4.6 20060404 (Red Hat 3.4.6-10)) #1 SMP Thu Apr 30 19:39:33 EDT 2009
Xen version 3.1.2-128.1.10.el5
Important detail I first forgot to mention: this happens only when dom0 has an external IP associated with it.
Current solution: no external IP on dom0, access to dom0 via domU -> dom0 path. This could be relatively safe when having a separate domU which does nothing but provide this route. I can still connect to dom0 remotely and reboot other machines when needed.
EDIT2: additional info about MAC addresses on dom0
dom0
# ifconfig|grep HWaddr bond0 Link encap:Ethernet HWaddr 00:04:23:DC:28:60 bond0.100 Link encap:Ethernet HWaddr 00:04:23:DC:28:60 eth0 Link encap:Ethernet HWaddr 00:04:23:DC:28:60 eth1 Link encap:Ethernet HWaddr 00:04:23:DC:28:60 tap0 Link encap:Ethernet HWaddr 7E:CE:49:45:3F:2E vif4.0 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF vif4.1 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF vif22.0 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF xenbr0 Link encap:Ethernet HWaddr 00:04:23:DC:28:60 xenbr1 Link encap:Ethernet HWaddr 00:04:23:DC:28:60
It would seem that there's really some issue with dup MAC addresses.
arp -an
of your workstation to see what they are resolving to before, during and after it happens.