Hi guys,

Under what conditions does the error "write UDPv4 Operation not permitted 
(code=1)" occur? I've googled for answers and found none that explained the 
weird behavior.

Thanks in advance for your clarification.

Lisa

Below is the log of the said error:
*****************************************************************
Mon March 20 16:30:27 2015 OpenVPN 2.3.2 x86_64-pc-linux-gnu [SSL (OpenSSL)] 
[LZO] [EPOLL] [PKCS11] [eurephia] [MH] [IPv6] built on Dec  2 2014
Mon March 20 16:30:27 2015 WARNING: file 'login.txt' is group or others 
accessible
Mon March 20 16:30:27 2015 Socket Buffers: R=[212992->131072] S=[212992->131072]
Mon March 20 16:30:28 2015 UDPv4 link local: [undef]
Mon March 20 16:30:28 2015 UDPv4 link remote: [AF_INET]a.b.c.d.:443
Mon March 20 16:30:28 2015 TLS: Initial packet from [AF_INET]a.b.c.d.:443, 
sid=e181f840 50aa73ec
Mon March 20 16:30:30 2015 Validating certificate key usage
Mon March 20 16:30:30 2015 ++ Certificate has key usage  00a0, expects 00a0
Mon March 20 16:30:30 2015 VERIFY KU OK
Mon March 20 16:30:30 2015 Validating certificate extended key usage
Mon March 20 16:30:30 2015 ++ Certificate has EKU (str) TLS Web Server 
Authentication, expects TLS Web Server Authentication
Mon March 20 16:30:30 2015 VERIFY EKU OK
Mon March 20 16:30:30 2015 VERIFY OK: depth=0,blah, blah, blah.........
Mon March 20 16:30:32 2015 Data Channel Encrypt: Cipher 'BF-CBC' initialized 
with 128 bit key
Mon March 20 16:30:32 2015 Data Channel Encrypt: Using 160 bit message hash 
'SHA1' for HMAC authentication
Mon March 20 16:30:32 2015 Data Channel Decrypt: Cipher 'BF-CBC' initialized 
with 128 bit key
Mon March 20 16:30:32 2015 Data Channel Decrypt: Using 160 bit message hash 
'SHA1' for HMAC authentication
Mon March 20 16:30:32 2015 Control Channel: TLSv1, cipher TLSv1/SSLv3 
DHE-RSA-AES256-SHA, 2048 bit RSA
Mon March 20 16:30:32 2015 [TG-OVPN-CA] Peer Connection Initiated with 
[AF_INET]a.b.c.d.:443
Mon March 20 16:30:34 2015 SENT CONTROL [ABC-OVPN]: 'PUSH_REQUEST' (status=1)
Mon March 20 16:30:34 2015 PUSH: Received control message: 
'PUSH_REPLY,redirect-gateway def1,dhcp-option DNS 8.8.8.8,dhcp-option DNS 
8.8.4.4,route 10.8.0.1,topology net30,ping 5,ping-restart 30,ifconfig 10.8.0.22 
10.8.0.21'
Mon March 20 16:30:34 2015 OPTIONS IMPORT: timers and/or timeouts modified
Mon March 20 16:30:34 2015 OPTIONS IMPORT: --ifconfig/up options modified
Mon March 20 16:30:34 2015 OPTIONS IMPORT: route options modified
Mon March 20 16:30:34 2015 OPTIONS IMPORT: --ip-win32 and/or --dhcp-option 
options modified
Mon March 20 16:30:34 2015 ROUTE_GATEWAY 192.168.1.1/255.255.255.0 IFACE=eth0 
HWADDR=aa:bb:cc:dd:ee:ff
Mon March 20 16:30:34 2015 TUN/TAP device tun0 opened
Mon March 20 16:30:34 2015 TUN/TAP TX queue length set to 100
Mon March 20 16:30:34 2015 do_ifconfig, tt->ipv6=0, 
tt->did_ifconfig_ipv6_setup=0
Mon March 20 16:30:34 2015 /sbin/ip link set dev tun0 up mtu 1500
Mon March 20 16:30:34 2015 /sbin/ip addr add dev tun0 local 10.8.0.22 peer 
10.8.0.21
Mon March 20 16:30:36 2015 /sbin/ip route add a.b.c.d./32 via 192.168.1.1
Mon March 20 16:30:36 2015 /sbin/ip route add 0.0.0.0/1 via 10.8.0.21
Mon March 20 16:30:36 2015 /sbin/ip route add 128.0.0.0/1 via 10.8.0.21
Mon March 20 16:30:36 2015 /sbin/ip route add 10.8.0.1/32 via 10.8.0.21
Mon March 20 16:30:36 2015 Initialization Sequence Completed
Mon March 20 16:31:50 2015 write UDPv4: Operation not permitted (code=1)
Mon March 20 16:31:55 2015 write UDPv4: Operation not permitted (code=1)
Mon March 20 16:31:55 2015 write UDPv4: Operation not permitted (code=1)
Mon March 20 16:31:58 2015 write UDPv4: Operation not permitted (code=1)
^CMon March 20 16:32:01 2015 event_wait : Interrupted system call (code=4)
Mon March 20 16:32:01 2015 /sbin/ip route del 10.8.0.1/32
Mon March 20 16:32:01 2015 /sbin/ip route del 37.221.170.24/32
Mon March 20 16:32:01 2015 /sbin/ip route del 0.0.0.0/1
Mon March 20 16:32:01 2015 /sbin/ip route del 128.0.0.0/1
Mon March 20 16:32:01 2015 Closing TUN/TAP interface
Mon March 20 16:32:01 2015 /sbin/ip addr del dev tun0 local 10.8.0.22 peer 
10.8.0.21
Mon March 20 16:32:02 2015 SIGINT[hard,] received, process exiting
*******************************************************************
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