Hi again, I have found that when I run the comand this way: fence_xvmd -fddddd -I vnet0 Debugging threshold is now 5 -- args @ 0xbfa1cb58 -- args->addr = 225.0.0.12 args->domain = (null) args->key_file = /etc/cluster/fence_xvm.key args->op = 2 args->hash = 2 args->auth = 2 args->port = 1229 args->ifindex = 4 args->family = 2 args->timeout = 30 args->retr_time = 20 args->flags = 1 args->debug = 5 -- end args -- Reading in key file /etc/cluster/fence_xvm.key into 0xbfa1bb58 (4096 max size) Actual key length = 4096 bytesOpened ckpt vm_states Setting up ipv4 multicast receive (<a href="http://225.0.0.12:1229">225.0.0.12:1229</a>) Joining multicast group ipv4_recv_sk: success, fd = 7 My Node ID = 1 Domain UUID Owner State ------ ---- ----- ----- Domain-0 00000000-0000-0000-0000-000000000000 00001 00001 NODO1 73f4ab26-62de-732d-e5a2-1eb1740840ec 00001 00002 NODO2 73f4ab26-62de-732d-e5a2-1eb1740840ed 00001 00002 Storing NODO1 Storing NODO2 ........ But when I try to fence the from the node: fence_xvm -H NODO2 -ddd -o null Debugging threshold is now 3 -- args @ 0xbfed88bc -- args->addr = 225.0.0.12 args->domain = NODO2 args->key_file = /etc/cluster/fence_xvm.key args->op = 0 args->hash = 2 args->auth = 2 args->port = 1229 args->ifindex = 0 args->family = 2 args->timeout = 30 args->retr_time = 20 args->flags = 0 args->debug = 3 -- end args -- Reading in key file /etc/cluster/fence_xvm.key into 0xbfed786c (4096 max size) Actual key length = 4096 bytesSending to 225.0.0.12 via 127.0.0.1 Sending to 225.0.0.12 via 192.168.1.186 Sending to 225.0.0.12 via 192.168.1.187 Sending to 225.0.0.12 via 10.0.0.1 Sending to 225.0.0.12 via 192.168.122.1 Waiting for connection from XVM host daemon. ..... Timed out waiting for response and doesn´t fence. any help with this new info? Thanks, ESG