mtu

  1. I

    implement pmtu discovery on udp connection that serves as vpn tunnel.

    Hi, I've created a socket which is bound to virtual interface, and receive all outgoing traffic due to default routing table rule setting. Once outgoing packet arrive, it will be encapsulated with some VPN header and sent to the remote tunnel gateway through the physical interface. I was...
  2. epopen

    MTU of jail vimage by netgraph

    Hi All I have a question about MTU of jail vimage by netgraph. Please reference illustration of running system as follows. Running routing mode with gateway_enable="YES" @ /etc/rc.conf. Connect Jail of ssh from netif msk0(internet) via ssh. Log in is OK, but disconnect unexpected when high...
  3. Dave12

    FreeBSD 11.1 - Only 1 ICMP redirect (frag needed) packet returned

    So we've got an issue that's been perplexing us. We're using a FreeBSD box as a router, with 1 NIC set to a low MTU (VPN reasons) and another NIC set to a normal MTU. NIC 1 is the route out to to the internet + IPSec interface - MTU = 1350 NIC 2 is the route into our network - MTU = 1500...
  4. Y

    lte 4g common usage and gaming

    On lte 4g i recognised some crashing behaviours which didn't occur on cable. This happens with wine and other sensitive programs. set: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\lanmanserver\parameters autodisconnect decimal -1 change mtu on your network-card-settings down to your...
  5. IPTRACE

    MTU on bridge, tap and Bhyve guests (vtnet)

    I've set MTU to 3000 using the following commands. On hypervisor: ifconfig bridge0 mtu 3000 ifconfig tap0 mtu 3000 ifconfig tap1 mtu 3000 etc. On guests: ifconfig vtnet0 mtu 3000 etc. I've trapped data and get the MSS is 1358. So the above value is not close the 3000. ethertype IPv4...
  6. A

    Issue with connection (operation_not_permitted)

    Hello! I've installed FReeBSD 11 on my client mashine. On my server I have also FreeBSD 11. My client has 3G modem which successfully connects through ppp daemon to the cellurar network. After that my client successfully establish L2TP IPSec connection to my server. After that I connect to my...
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