Pfsense pppoe mtu. I have the HH4000 too and run pfSense in a Proxmox VM .
Pfsense pppoe mtu In data centres, you may find jumbo frames are used, with 9000 MTU. Regardless of what the original MTU is set to, routers need some means to deal with packets that are too big to pass over the next link. If you don't configure an MTU in pfSense, it will default to 1492 on a PPPoE interface. php and interfaces_ppps_edit. The web UI seems to support configuring mpd with an MTU/MRU greater than 1492. Aquiss support RFC 4638 (jumbo frames for PPPoE) so it is also possible to adjust the MTU of your interface to 1508, eliminating the 8-byte overhead for PPP/PPPoE encapsulation, to do this, navigate to Interfaces -> WAN and set the MTU to 1500, as below (configuring the MTU here as 1500 will automatically adjust the interface MTU to 1508). This doesn't have support for RFC-4638 (Accommodating a Maximum Transit Unit/Maximum Receive Unit (MTU/MRU) Greater Than 1492 in the Point-to-Point Protocol over Ethernet (PPPoE)). Does anybody change their MTU when they set up PPPoE passthrough? I am on PFSense and have the HH4000. The suggested configuration lead to a broken internet connection, DNS (Unbound with DoT) barely resolve anything. I have the HH4000 too and run pfSense in a Proxmox VM . php have no effect on the MTU reported by ifconfig pppoe0 (at any point during the dialling process). Jun 13, 2018 · The MTU values configured in interfaces. Feb 5, 2025 · My setup is PPPoE over VLAN, provider (KPN NL) declares that MTU 1500 on PPPoE is supported. Mar 19, 2019 · It's based on the hardware, typically 1500 for Ethernet, though there may be exceptions such as 1492 for DSL connections, where PPPoE is used. I run Opnsense in a Proxmox VM with bridge for WAN (bridge and it outbound physical interface in Proxmox set to MTU 1512). When I use this nmap script to detect the MTU between a LAN connected host and the internet, the MTU is detected as 1492 (as expected given the value reported by ifconfig pppoe0) This means that the maximum MTU of a PPPoE interface is 1492 unless your Ethernet interface and modem support jumbo frames and your ISP supports RFC 4638. The underlying interface can be configured with a MTU of 1508 or greater. teqprxrmrpmhfxpsxticandwecjwcyfhbylqzeygoxqhpwrf