addNode failed when they were idle for some time

I install cb on some vms few hours before and then I tried to add 172.23.105.159 + 72.23.105.160
in the first attempt I got

[error_logger:info,2014-05-02T6:13:24.029,ns_1@127.0.0.1:error_logger<0.6.0>:ale_error_logger_handler:do_log:207]
=========================PROGRESS REPORT=========================
supervisor:

{local,net_sup}
started: [{pid,<0.16105.1>},
{name,erl_epmd},
{mfargs,{erl_epmd,start_link,[]}},
{restart_type,permanent},
{shutdown,2000},
{child_type,worker}]

[error_logger:info,2014-05-02T6:13:24.029,ns_1@127.0.0.1:error_logger<0.6.0>:ale_error_logger_handler:do_log:207]
=========================PROGRESS REPORT=========================
supervisor: {local,net_sup}

started: [

{pid,<0.16106.1>}

,

{name,auth}

,
{mfargs,{auth,start_link,[]}},

{restart_type,permanent},
{shutdown,2000},
{child_type,worker}]

[ns_server:debug,2014-05-02T6:13:24.030,nonode@nohost:<0.724.0>:ns_pubsub:do_subscribe_link:136]Parent process of subscription {ns_config_events,<0.722.0>} exited with reason noconnection
[user:warn,2014-05-02T6:13:24.030,nonode@nohost:ns_node_disco<0.609.0>:ns_node_disco:handle_info:175]Node nonode@nohost saw that node 'ns_1@127.0.0.1' went down. Details: [{nodedown_reason, net_kernel_terminated}]
[error_logger:info,2014-05-02T6:13:24.031,nonode@nohost:error_logger<0.6.0>:ale_error_logger_handler:do_log:207]
=========================PROGRESS REPORT=========================
supervisor: {local,ns_server_sup}
started: [{pid,<0.16108.1>},
{name,ns_ports_setup},
{mfa,{ns_ports_setup,start,[]}},
{restart_type,{permanent,4}},
{shutdown,brutal_kill},
{child_type,worker}]

[error_logger:info,2014-05-02T6:13:24.036,nonode@nohost:error_logger<0.6.0>:ale_error_logger_handler:do_log:207]Protocol: "inet_tcp": the name ns_1@172.23.105.159 seems to be in use by another Erlang node
[ns_server:info,2014-05-02T6:13:24.037,nonode@nohost:ns_node_disco_events<0.608.0>:ns_node_disco_log:handle_event:46]ns_node_disco_log: nodes changed: []
[error_logger:error,2014-05-02T6:13:24.037,nonode@nohost:error_logger<0.6.0>:ale_error_logger_handler:do_log:207]
=========================CRASH REPORT=========================
crasher:
initial call: net_kernel:init/1
pid: <0.16107.1>
registered_name: []
exception exit: {error,badarg}
in function gen_server:init_it/6 (gen_server.erl, line 320)
ancestors: [net_sup,kernel_sup,<0.10.0>]
messages: []
links: Port<0.19771>,<0.16104.1>
dictionary: [{longnames,true}]
trap_exit: true
status: running
heap_size: 610
stack_size: 27
reductions: 1020
neighbours:

[ns_server:info,2014-05-02T6:13:24.037,nonode@nohost:dist_manager<0.16110.1>:dist_manager:read_address_config_from_path:83]Reading ip config from "/opt/couchbase/var/lib/couchbase/ip_start"
[error_logger:error,2014-05-02T6:13:24.037,nonode@nohost:error_logger<0.6.0>:ale_error_logger_handler:do_log:207]
=========================SUPERVISOR REPORT=========================
Supervisor: {local,net_sup}
Context: start_error
Reason: {'EXIT',nodistribution}
Offender: [{pid,undefined},
{name,net_kernel},
{mfargs,{net_kernel,start_link,
[['ns_1@172.23.105.159',longnames]]}},
{restart_type,permanent}

,

{shutdown,2000}

,

{child_type,worker}

]

[ns_server:error,2014-05-02T6:13:24.037,nonode@nohost:<0.704.0>:menelaus_web:loop:164]Server error during processing: ["web request failed",

{path, "/pools/default/serverGroups/0/addNode"}

,

{type,exit}

,
{what,
{{{function_clause,
[{dist_manager,decode_status,
[{error,
{{shutdown,
{failed_to_start_child,net_kernel,

{'EXIT',nodistribution}}},
{child,undefined,net_sup_dynamic,
{erl_distribution,start_link, [['ns_1@172.23.105.159', longnames]]},
permanent,1000,supervisor,
[erl_distribution]}}}],
[{file,"src/dist_manager.erl"},
{line,184}]},
{dist_manager,bringup,2,
[{file,"src/dist_manager.erl"},
{line,231}]},
{dist_manager,do_adjust_address,3,
[{file,"src/dist_manager.erl"},
{line,250}]},
{gen_server,handle_msg,5,
[{file,"gen_server.erl"},{line,585}]},
{proc_lib,init_p_do_apply,3,
[{file,"proc_lib.erl"},{line,239}]}]},
{gen_server,call,
[dist_manager,
{adjust_my_address,"172.23.105.159", false}]}},
{gen_server,call,
[ns_cluster,
{add_node_to_group,"172.23.105.160",
8091,
{"Administrator","password"},
<<"0">>},
65000]}}},
{trace,
[{gen_server,call,3,
[{file,"gen_server.erl"},{line,188}]},
{ns_cluster,add_node_to_group,4,
[{file,"src/ns_cluster.erl"},{line,84}]},
{menelaus_web,do_handle_add_node,2,
[{file,"src/menelaus_web.erl"},
{line,2493}]},
{request_throttler,do_request,3,
[{file,"src/request_throttler.erl"},
{line,59}]},
{menelaus_web,loop,3,
[{file,"src/menelaus_web.erl"},
{line,143}]},
{mochiweb_http,headers,5,
[{file, "/home/buildbot/centos-5-x64-300-builder/build/build/couchdb/src/mochiweb/mochiweb_http.erl"},
{line,94}]},
{proc_lib,init_p_do_apply,3,
[{file,"proc_lib.erl"},{line,239}]}]}]
[error_logger:error,2014-05-02T6:13:24.038,nonode@nohost:error_logger<0.6.0>:ale_error_logger_handler:do_log:207]** Generic server dist_manager terminating
** Last message in was {adjust_my_address,"172.23.105.159",false}
** When Server state == {state,true,false,"127.0.0.1"}
** Reason for termination ==
** {function_clause,
[{dist_manager,decode_status,
[{error,
{{shutdown,
{failed_to_start_child,net_kernel,
{'EXIT',nodistribution}

}},
{child,undefined,net_sup_dynamic,

{erl_distribution,start_link, [['ns_1@172.23.105.159',longnames]]}

,
permanent,1000,supervisor,
[erl_distribution]}}}],
[

{file,"src/dist_manager.erl"},{line,184}]},
{dist_manager,bringup,2,[{file,"src/dist_manager.erl"}

,

{line,231}]},
{dist_manager,do_adjust_address,3,
[{file,"src/dist_manager.erl"},{line,250}]},
{gen_server,handle_msg,5,[{file,"gen_server.erl"},{line,585}]},
{proc_lib,init_p_do_apply,3,[{file,"proc_lib.erl"},{line,239}]}]}

[ns_server:info,2014-05-02T6:13:24.038,nonode@nohost:dist_manager<0.16110.1>:dist_manager:read_address_config_from_path:83]Reading ip config from "/opt/couchbase/var/lib/couchbase/ip"
[ns_server:info,2014-05-02T6:13:24.038,nonode@nohost:dist_manager<0.16110.1>:dist_manager:init:159]ip config not found. Looks like we're brand new node
[ns_server:info,2014-05-02T6:13:24.039,nonode@nohost:dist_manager<0.16110.1>:dist_manager:bringup:230]Attempting to bring up net_kernel with name 'ns_1@127.0.0.1'
[error_logger:error,2014-05-02T6:13:24.039,nonode@nohost:error_logger<0.6.0>:ale_error_logger_handler:do_log:207]
=========================CRASH REPORT=========================
crasher:
initial call: dist_manager:init/1
pid: <0.276.0>
registered_name: dist_manager
exception exit: {function_clause,
[{dist_manager,decode_status,
[{error,
{{shutdown,
{failed_to_start_child,net_kernel,
{'EXIT',nodistribution}}},
{child,undefined,net_sup_dynamic,
{erl_distribution,start_link, [['ns_1@172.23.105.159',longnames]]},
permanent,1000,supervisor,
[erl_distribution]}}}],
[{file,"src/dist_manager.erl"},{line,184}]},
{dist_manager,bringup,2,
[{file,"src/dist_manager.erl"},{line,231}

]},
{dist_manager,do_adjust_address,3,
[

{file,"src/dist_manager.erl"}

,

{line,250}

]},
{gen_server,handle_msg,5,
[

{file,"gen_server.erl"}

,

{line,585}

]},
{proc_lib,init_p_do_apply,3,
[

{file,"proc_lib.erl"}

,

{line,239}

]}]}
in function gen_server:terminate/6 (gen_server.erl, line 744)
ancestors: [ns_server_cluster_sup,<0.58.0>]
messages: []
links: [<0.172.0>]
dictionary: []
trap_exit: false
status: running
heap_size: 2586
stack_size: 27
reductions: 8236
neighbours:

very similar to MB-9595