UDBv4: No buffer space available?

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deadshort

Posts: 2
Joined: Sun Sep 13, 2009 8:09 am

Post by deadshort » Sat Sep 19, 2009 1:22 am
We are getting the following error on connection. 10.6.1, but also a 10.5.8 (or 7, maybe). I have seen reports of this error "out there", but no fix or tight diagnosis. I tried lowering the tun-mtu & fragment on the client side, as I was seeing many fragments at the IP layer. But all the imprecise prescriptions for DNS/DHCP/routing hacks in the openvpn config were too vague for me to hustle after... ;) OK, this does feel like an openvpn problem, but surely you know more about that than the muttering crowd.
[ I don't see any registration info in the log; maybe I needed to restart before that shows up. ]

Thanks,
- c
Fri Sep 18 11:09:24 2009: MANAGEMENT: CMD 'state on'
Fri Sep 18 11:09:24 2009: MANAGEMENT: CMD 'hold release'
Fri Sep 18 11:09:24 2009: WARNING: No server certificate verification method has been enabled. See http://openvpn.net/howto.html#mitm for more info.
Fri Sep 18 11:09:24 2009: NOTE: OpenVPN 2.1 requires '--script-security 2' or higher to call user-defined scripts or executables
Fri Sep 18 11:09:24 2009: LZO compression initialized
Fri Sep 18 11:09:24 2009: Control Channel MTU parms [ L:1558 D:138 EF:38 EB:0 ET:0 EL:0 ]
Fri Sep 18 11:09:24 2009: MANAGEMENT: >STATE:1253286564,RESOLVE,,,
Fri Sep 18 11:09:24 2009: Data Channel MTU parms [ L:1558 D:1450 EF:58 EB:135 ET:0 EL:0 AF:3/1 ]
Fri Sep 18 11:09:24 2009: Local Options String: 'V4,dev-type tun,link-mtu 1558,tun-mtu 1500,proto UDPv4,comp-lzo,cipher AES-128-CBC,auth SHA1,keysize 128,key-method 2,tls-client'
Fri Sep 18 11:09:24 2009: Expected Remote Options String: 'V4,dev-type tun,link-mtu 1558,tun-mtu 1500,proto UDPv4,comp-lzo,cipher AES-128-CBC,auth SHA1,keysize 128,key-method 2,tls-server'
Fri Sep 18 11:09:24 2009: Local Options hash (VER=V4): '66096c33'
Fri Sep 18 11:09:24 2009: Expected Remote Options hash (VER=V4): '691e95c7'
Fri Sep 18 11:09:24 2009: Socket Buffers: R=[42080->65536] S=[9216->65536]
Fri Sep 18 11:09:24 2009: UDPv4 link local: [undef]
Fri Sep 18 11:09:24 2009: UDPv4 link remote: aa.bb.cc.dd:1194
Fri Sep 18 11:09:24 2009: MANAGEMENT: >STATE:1253286564,WAIT,,,
Fri Sep 18 11:09:24 2009: MANAGEMENT: CMD 'hold release'
Fri Sep 18 11:09:24 2009: MANAGEMENT: >STATE:1253286564,AUTH,,,
Fri Sep 18 11:09:24 2009: TLS: Initial packet from aa.bb.cc.dd:1194, sid=82ed1300 3fd7ff5d
Fri Sep 18 11:09:25 2009: VERIFY OK: depth=1, /C=US/etc
Fri Sep 18 11:09:25 2009: VERIFY OK: depth=0, /C=US/etc
Fri Sep 18 11:09:26 2009: Data Channel Encrypt: Cipher 'AES-128-CBC' initialized with 128 bit key
Fri Sep 18 11:09:26 2009: Data Channel Encrypt: Using 160 bit message hash 'SHA1' for HMAC authentication
Fri Sep 18 11:09:26 2009: Data Channel Decrypt: Cipher 'AES-128-CBC' initialized with 128 bit key
Fri Sep 18 11:09:26 2009: Data Channel Decrypt: Using 160 bit message hash 'SHA1' for HMAC authentication
Fri Sep 18 11:09:26 2009: Control Channel: TLSv1, cipher TLSv1/SSLv3 DHE-RSA-AES256-SHA, 1024 bit RSA
Fri Sep 18 11:09:26 2009: [APO] Peer Connection Initiated with aa.bb.cc.dd:1194
Fri Sep 18 11:09:27 2009: MANAGEMENT: >STATE:1253286567,GET_CONFIG,,,
Fri Sep 18 11:09:27 2009: SENT CONTROL [APO]: 'PUSH_REQUEST' (status=1)
Fri Sep 18 11:09:27 2009: PUSH: Received control message: 'PUSH_REPLY,route aa.bb.cc.0 255.255.255.0,route 10.65.63.1,ping 10,ping-restart 120,ifconfig 10.65.63.6 10.65.63.5'
Fri Sep 18 11:09:27 2009: OPTIONS IMPORT: timers and/or timeouts modified
Fri Sep 18 11:09:27 2009: OPTIONS IMPORT: --ifconfig/up options modified
Fri Sep 18 11:09:27 2009: OPTIONS IMPORT: route options modified
Fri Sep 18 11:09:27 2009: ROUTE default_gateway=xx.yy.zz.nn
Fri Sep 18 11:09:27 2009: TUN/TAP device /dev/tun0 opened
Fri Sep 18 11:09:27 2009: MANAGEMENT: >STATE:1253286567,ASSIGN_IP,,10.65.63.6,
Fri Sep 18 11:09:27 2009: /sbin/ifconfig tun0 delete
Fri Sep 18 11:09:27 2009: NOTE: Tried to delete pre-existing tun/tap instance -- No Problem if failure
Fri Sep 18 11:09:27 2009: /sbin/ifconfig tun0 10.65.63.6 10.65.63.5 mtu 1500 netmask 255.255.255.255 up
Fri Sep 18 11:09:27 2009: MANAGEMENT: >STATE:1253286567,ADD_ROUTES,,,
Fri Sep 18 11:09:27 2009: /sbin/route add -net aa.bb.cc.0 10.65.63.5 255.255.255.0
Fri Sep 18 11:09:27 2009: /sbin/route add -net 10.65.63.1 10.65.63.5 255.255.255.255
Fri Sep 18 11:09:27 2009: Initialization Sequence Completed
Fri Sep 18 11:09:27 2009: MANAGEMENT: >STATE:1253286567,CONNECTED,SUCCESS,10.65.63.6,aa.bb.cc.102
Fri Sep 18 11:09:27 2009: write UDPv4: No buffer space available (code=55)
Fri Sep 18 11:09:27 2009: write UDPv4: No buffer space available (code=55)
Fri Sep 18 11:09:27 2009: write UDPv4: No buffer space available (code=55)
[ and on and on ]
[ and on and on and on ]
[ and on ]

deadshort

Posts: 2
Joined: Sun Sep 13, 2009 8:09 am

Post by deadshort » Sat Sep 19, 2009 1:52 am
Answering my own post, the google folks just came up with http://code.google.com/p/tunnelblick/is ... ?id=44#c11 -- I'll try sweet talking the server admins a bit.

And yes, UDB/UDP/USB/UPS/UNK. URK

- c
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